LBNL Office of science Department of Energy

Ion Beam Technology Group

Lawrence Berkeley National Laboratory

Accelerator Technology & Applied Physics Division

Publications

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2016

  • P.A. Seidl, Q.Ji, A.Persaud, E.Feinberg, B.Ludewigt, M.Silverman, A.Sulyman, W.L. Waldron, T.Schenkel, J.J. Barnard, A.Friedman, D.P. Grote, E.P. Gilson, I.D. Kaganovich, A.Stepanov, F.Treffert and M.Zimmer Recent Experiments At Ndcx-II: Irradiation Of Materials Using Short, Intense Ion Beams (2016) arXiv.org bibtex
    @article{ Seidle-NAPAC16,
    title = "Recent Experiments At Ndcx-II: Irradiation Of Materials Using Short, Intense Ion Beams",
    eprint = "arXiv:1610.05253",
    year = "2016",
    author = "P.A. Seidl and Q.Ji and A.Persaud and E.Feinberg and B.Ludewigt and M.Silverman and A.Sulyman and W.L. Waldron and T.Schenkel and J.J. Barnard and A.Friedman and D.P. Grote and E.P. Gilson and I.D. Kaganovich and A.Stepanov and F.Treffert and M.Zimmer",
    }
  • A.Persaud, M.J. Regis, M.W. Stettler and V.K. Vytla Control Infrastructure for a Pulsed Ion Accelerator IEEE Transactions on Nuclear Science 63 2677--2681 (2016) doi arXiv.org bibtex
    @article{ Persaud:TNS-63-2677,
    title = "Control Infrastructure for a Pulsed Ion Accelerator",
    journal = "IEEE Transactions on Nuclear Science",
    volume = "63",
    issue = "5",
    pages = "2677--2681",
    year = "2016",
    doi = "10.1109/TNS.2016.2594243",
    eprint = "arXiv:1506.04212",
    author = "A.Persaud and M.J. Regis and M.W. Stettler and V.K. Vytla",
    }
  • P.A. Seidl, J.J. Barnard, R.C. Davidson, A.Friedman, E.P. Gilson, D.Grote, Q.Ji, I.D. Kaganovich, A.Persaud, W.L. Waldron and T.Schenkel Recent Results with Short-Pulse, Compressed Ion Beams at the Neutralized Drift Compression Experiment in High Energy Density generated by Heavy Ion and Laser Beams, HEDgeHOB Collaboration at FAIR - Report 2014/2015 (2016) journal web page bibtex
    @inproceedings{ Seidl-GSI-HEDgeHOB-2016,
    title = "Recent Results with Short-Pulse, Compressed Ion Beams at the Neutralized Drift Compression Experiment",
    year = "2016",
    organization = "GSI",
    booktitle = "High Energy Density generated by Heavy Ion and Laser Beams, HEDgeHOB Collaboration at FAIR - Report 2014/2015",
    month = "April",
    URL = "https://indico.gsi.de/getFile.py/access?resId=0&materialId=17&confId=3206",
    author = "P.A. Seidl and J.J. Barnard and R.C. Davidson and A.Friedman and E.P. Gilson and D.Grote and Q.Ji and I.D. Kaganovich and A.Persaud and W.L. Waldron and T.Schenkel",
    }
  • Q.Ji, P.A. Seidl, W.L. Waldron, J.H. Takakuwa, A.Friedman, D.P. Grote, A.Persaud, J.J. Barnard and T.Schenkel Development and testing of a pulsed helium ion source for probing materials and warm dense matter studies Review of Scientific Instruments 87 02B707 (2016) doi bibtex
    @article{ Ji:RoSI-87-02B707,
    title = "Development and testing of a pulsed helium ion source for probing materials and warm dense matter studies",
    journal = "Review of Scientific Instruments",
    volume = "87",
    issue = "2",
    pages = "02B707",
    doi = "10.1063/1.4932569",
    year = "2016",
    author = "Q.Ji and P.A. Seidl and W.L. Waldron and J.H. Takakuwa and A.Friedman and D.P. Grote and A.Persaud and J.J. Barnard and T.Schenkel",
    }
  • P.A. Seidl, J.J. Barnard, R.C. Davidson, A.Friedman, E.P. Gilson, D.Grote, Q.Ji, I.D. Kaganovich, A.Persaud, W.L. Waldron and T.Schenkel Short-pulse, compressed ion beams at the Neutralized Drift Compression Experiment Journal of Physics: Conference Series 717(1) 012079 (2016) doi journal web page arXiv.org bibtex
    @inproceedigns{ Seidl-IFSA-2015,
    title = "Short-pulse, compressed ion beams at the Neutralized Drift Compression Experiment",
    journal = "Journal of Physics: Conference Series",
    eprint = "arXiv:160.01732",
    year = "2016",
    volume = "717",
    number = "1",
    pages = "012079",
    url = "http://stacks.iop.org/1742-6596/717/i=1/a=012079",
    doi = "http://dx.doi.org/10.1088/1742-6596/717/1/012079",
    author = "P.A. Seidl and J.J. Barnard and R.C. Davidson and A.Friedman and E.P. Gilson and D.Grote and Q.Ji and I.D. Kaganovich and A.Persaud and W.L. Waldron and T.Schenkel",
    }

2015

  • P.A. Seidl, A.Persaud, W.L. Waldron, J.J. Barnard, R.C. Davidson, A.Friedman, E.P. Gilson, W.G. Greenway, D.P. Grote, I.D. Kaganovich, S.M. Lidia, M.Stettler, J.H. Takakuwa and T.Schenkel Short intense ion pulses for materials and warm dense matter research Nuclear Instruments and Methods in Physics Research A 800 98--103 (2015) doi bibtex
    @article{ Seidl:NIMA-800-98,
    title = "Short intense ion pulses for materials and warm dense matter research",
    journal = "Nuclear Instruments and Methods in Physics Research A",
    year = "2015",
    volume = "800",
    pages = "98--103",
    doi = "10.1016/j.nima.2015.08.01",
    author = "P.A. Seidl and A.Persaud and W.L. Waldron and J.J. Barnard and R.C. Davidson and A.Friedman and E.P. Gilson and W.G. Greenway and D.P. Grote and I.D. Kaganovich and S.M. Lidia and M.Stettler and J.H. Takakuwa and T.Schenkel",
    }
  • P.A. Seidl, A.Persaud, T.Schenkel, W.L. Waldron, H.Guo, J.J. Barnard, A.Friedman, D.Grote, R.Davidson, E.Gilson and I.Kaganovich Short-Pulse Ion Beams for Discovery Science at Berkeley Lab in High Energy Density generated by Heavy Ion and Laser Beams, HEDgeHOB Collaboration at FAIR - Report 2013/2014 (2015) journal web page bibtex
    @inproceedings{ Seidl-GSI-HEDgeHOB-2015,
    title = "Short-Pulse Ion Beams for Discovery Science at Berkeley Lab",
    year = "2015",
    organization = "GSI",
    booktitle = "High Energy Density generated by Heavy Ion and Laser Beams, HEDgeHOB Collaboration at FAIR - Report 2013/2014",
    month = "April",
    URL = "https://indico.gsi.de/getFile.py/access?resId=0&materialId=17&confId=3206",
    author = "P.A. Seidl and A.Persaud and T.Schenkel and W.L. Waldron and H.Guo and J.J. Barnard and A.Friedman and D.Grote and R.Davidson and E.Gilson and I.Kaganovich",
    }
  • T.Schenkel, C.D. Weis, C.C. Lo, A.Persaud, I.Chakarov, D.H. Schneider and J.Bokor in the XII International Symposium on Electron beam Ion Sources and Traps 1640 124--1248 (2015) doi bibtex
    @inproceedings{ Schenkel:AIP-1640-124,
    titel = "Deterministic doping and the exploration of spin qubits",
    booktitle = "the XII International Symposium on Electron beam Ion Sources and Traps",
    note = "the XII International Symposium on Electron beam Ion Sources and Traps, East Lansing, Michigan, US, 18-21 May 2014,",
    address = "East Lansing, Michigan, US",
    organization = "AIP Conference Proceedings",
    publisher = "AIP",
    year = "2015",
    pages = "124--1248",
    volume = "1640",
    doi = "10.1063/1.4905409",
    author = "T.Schenkel and C.D. Weis and C.C. Lo and A.Persaud and I.Chakarov and D.H. Schneider and J.Bokor",
    }
  • A.Persaud, J.J. Barnard, H.Guo, P.Hosemann, S.Lidia, A.M. Minor, P.A. Seidl and T.Schenkel Accessing defect dynamics using intense, nanosecond pulsed ion beams Physics Procedia 66C 604--609 (2015) doi arXiv.org bibtex
    @article{ Persaud:PP-66-604,
    title = "Accessing defect dynamics using intense, nanosecond pulsed ion beams",
    journal = "Physics Procedia",
    doi = "10.1016/j.phpro.2015.05.080",
    volume = "66C",
    pages = "604--609",
    year = "2015",
    eprint = "cond-mat/1409.2565",
    author = "A.Persaud and J.J. Barnard and H.Guo and P.Hosemann and S.Lidia and A.M. Minor and P.A. Seidl and T.Schenkel",
    }

2014

  • Hua Guo, Arun Persaud, Steve Lidia, AndrewM. Minor, P.Hosemann, PeterA. Seidl and Thomas Schenkel Dynamic investigation of defects induced by short, high current pulses of high energy lithium ions in Symposium ZZ/AAA/BBB - Recent Advances in the Structural Characterization of Materials 1712 (2014) doi journal web page bibtex
    @inproceedings{ OPL:9347027,
    title = "Dynamic investigation of defects induced by short, high current pulses of high energy lithium ions",
    booktitle = "Symposium ZZ/AAA/BBB - Recent Advances in the Structural Characterization of Materials",
    series = "MRS Proceedings",
    volume = "1712",
    year = "2014",
    doi = "10.1557/opl.2014.856",
    URL = "http://journals.cambridge.org/article_S1946427414008562",
    author = "Hua Guo and Arun Persaud and Steve Lidia and AndrewM. Minor and P.Hosemann and PeterA. Seidl and Thomas Schenkel",
    }

2013

  • A.Sy, Q.Ji, A.Persaud, B.A. Ludewigt and T.Schenkel Ion source and beam guiding studies for an API neutron generator AIP Conf. Proc. 1525 123 (2013) doi bibtex
    @article{ Sy:AIP-1525-123,
    title = "Ion source and beam guiding studies for an API neutron generator",
    journal = "AIP Conf. Proc.",
    volume = "1525",
    pages = "123",
    year = "2013",
    doi = "10.1063/1.4802304",
    author = "A.Sy and Q.Ji and A.Persaud and B.A. Ludewigt and T.Schenkel",
    }
  • Arun Persaud Analysis of slope-intercept plots for arrays of electron field emitters Journal of Applied Physics 114(15) 154301 (2013) doi bibtex
    @article{ Persaud:JAP,
    title = "Analysis of slope-intercept plots for arrays of electron field emitters",
    journal = "Journal of Applied Physics",
    year = "2013",
    volume = "114",
    number = "15",
    pages = "154301",
    doi = "10.1063/1.4825051",
    author = "Arun Persaud",
    }
  • C.D. Weis and T.Schenkel Solid-state physics: Single spins in silicon see the light Nature 497 46--47 (2013) doi journal web page bibtex
    @article{ Weis:Nature-497-46,
    journal = "Nature",
    title = "Solid-state physics: Single spins in silicon see the light",
    pages = "46--47",
    volume = "497",
    year = "2013",
    doi = "10.1038/497046a",
    url = "http://www.nature.com/nature/journal/v497/n7447/full/497046a.html",
    author = "C.D. Weis and T.Schenkel",
    }
  • Ole Waldmann, Arun Persaud, Rehan Kapadia, Kuniharu Takei, FrancesI. Allen, Ali Javey and Thomas Schenkel Effects of palladium coating on field-emission properties of carbon nanofibers in a hydrogen plasma Thin Solid Films 534 488--491 (2013) pdf doi journal web page bibtex
    @article{ Waldmann:TSF-534-488,
    journal = "Thin Solid Films",
    title = "Effects of palladium coating on field-emission properties of carbon nanofibers in a hydrogen plasma",
    pages = "488--491",
    volume = "534",
    year = "2013",
    doi = "10.1016/j.tsf.2013.02.053",
    url = "http://www.sciencedirect.com/science/article/pii/S0040609013003027",
    author = "Ole Waldmann and Arun Persaud and Rehan Kapadia and Kuniharu Takei and FrancesI. Allen and Ali Javey and Thomas Schenkel",
    }

2012

  • Michael Ilg, ChristophD Weis, Julian Schwartz, Arun Persaud, Qing Ji, Cheuk Chi Lo, Jeffrey Bokor, Alex Hegyi, Elshad Guliyev, IvoW. Rangelow and Thomas Schenkel Improved single ion implantation with scanning probe alignment Journal of Vacuum Science and Technology B 30(6) 06FD04 (2012) doi journal web page bibtex
    @article{ Ilg:JVSTB-30-06FD04,
    title = "Improved single ion implantation with scanning probe alignment",
    journal = "Journal of Vacuum Science and Technology B",
    issn = "21662746",
    year = "2012",
    volume = "30",
    number = "6",
    pages = "06FD04",
    url = "http://link.aip.org/link/JVTBD9/v30/i6/p06FD04/s1&Agg=doi",
    doi = "10.1116/1.4767233",
    author = "Michael Ilg and ChristophD Weis and Julian Schwartz and Arun Persaud and Qing Ji and Cheuk Chi Lo and Jeffrey Bokor and Alex Hegyi and Elshad Guliyev and IvoW. Rangelow and Thomas Schenkel",
    }
  • C.D. Weis, C.C. Lo, V.Lang, A.M. Tyryshkin, R.E. George, K.M. Yu, J.Bokor, S.A. Lyon, J.J.L. Morton and T.Schenkel Electrical activation and electron spin resonance measurements of implanted bismuth in isotopically enriched silicon-28 Appl. Phys. Lett. 100(17) 172104 (2012) pdf doi journal web page bibtex
    @article{ Weis:APL-100-172104,
    journal = "Appl. Phys. Lett.",
    title = "Electrical activation and electron spin resonance measurements of implanted bismuth in isotopically enriched silicon-28",
    number = "17",
    pages = "172104",
    volume = "100",
    year = "2012",
    doi = "10.1063/1.4704561",
    url = "http://apl.aip.org/resource/1/applab/v100/i17/p172104_s1",
    author = "C.D. Weis and C.C. Lo and V.Lang and A.M. Tyryshkin and R.E. George and K.M. Yu and J.Bokor and S.A. Lyon and J.J.L. Morton and T.Schenkel",
    }
  • C.C. Lo, F.R. Bradbury, A.M. Tyryshkin, C.D. Weis, J.Bokor, T.Schenkel and S.A. Lyon Suppression of microwave rectification effects in electrically detected magnetic resonance measurements Appl. Phys. Lett. 100(6) 063510 (2012) pdf doi journal web page bibtex
    @article{ Lo:APL-100-063510,
    journal = "Appl. Phys. Lett.",
    title = "Suppression of microwave rectification effects in electrically detected magnetic resonance measurements",
    number = "6",
    pages = "063510",
    volume = "100",
    year = "2012",
    doi = "10.1063/1.3684247",
    url = "http://apl.aip.org/resource/1/applab/v100/i6/p063510_s1",
    author = "C.C. Lo and F.R. Bradbury and A.M. Tyryshkin and C.D. Weis and J.Bokor and T.Schenkel and S.A. Lyon",
    }
  • A.Sy, Q.Ji, A.Persaud, O.Waldmann and T.Schenkel Novel methods for improvement of a Penning ion source for neutron generator applications Review of Scientific Instruments 83 02B309 (2012) pdf doi journal web page bibtex
    @article{ Sy:RoSI-83-02B309,
    title = "Novel methods for improvement of a Penning ion source for neutron generator applications",
    journal = "Review of Scientific Instruments",
    year = "2012",
    volume = "83",
    pages = "02B309",
    url = "http://link.aip.org/link/?RSI/83/02B309",
    doi = "10.1063/1.3670744",
    author = "A.Sy and Q.Ji and A.Persaud and O.Waldmann and T.Schenkel",
    }
  • Arun Persaud, Ole Waldmann, Rehan Kapadia, Kuniharu Takei, Ali Javey and Thomas Schenkel A compact neutron generator using a field ionization source Review of Scientific Instruments 83 02B312 (2012) pdf doi journal web page bibtex
    @article{ Persaud:RoSI-83-02B312,
    title = "A compact neutron generator using a field ionization source",
    journal = "Review of Scientific Instruments",
    year = "2012",
    volume = "83",
    pages = "02B312",
    url = "http://link.aip.org/link/?RSI/83/02B312",
    doi = "10.1063/1.3672437",
    author = "Arun Persaud and Ole Waldmann and Rehan Kapadia and Kuniharu Takei and Ali Javey and Thomas Schenkel",
    }

2011

  • Ole Waldmann and Bernhard Ludewigt Development of a Permanent-Magnet Microwave Ion Source for a Sealed-Tube Neutron Generator Review of Scientific Instruments 82 113505 (2011) pdf doi journal web page bibtex
    @article{ Waldmann:RoSI-82-113505,
    title = "Development of a Permanent-Magnet Microwave Ion Source for a Sealed-Tube Neutron Generator",
    journal = "Review of Scientific Instruments",
    year = "2011",
    volume = "82",
    pages = "113505",
    url = "http://rsi.aip.org/resource/1/rsinak/v82/i11/p113505_s1",
    doi = "10.1063/1.3660282",
    author = "Ole Waldmann and Bernhard Ludewigt",
    }
  • B.J. Quiter, B.A. Ludewigt, V.V. Mozin, C.Wilson and S.Korbly Transmission Nuclear Resonance Fluorescence Measurement of 238 U Nuclear Instruments and Methods in Physics Research B (2011) doi bibtex
    @article{ Quiter-NIMB-2011,
    title = "Transmission Nuclear Resonance Fluorescence Measurement of 238 U",
    journal = "Nuclear Instruments and Methods in Physics Research B",
    year = "2011",
    doi = "10.1016/j.nimb.2011.02.081",
    author = "B.J. Quiter and B.A. Ludewigt and V.V. Mozin and C.Wilson and S.Korbly",
    }
  • B.J. Quiter, B.A. Ludewigt, V.V. Mozin, and S.G. Prussin Nuclear Resonance Fluorescence for Materials Assay IEEE Transactions on Nuclear Science 58(2) 400--403 (2011) doi journal web page bibtex
    @article{ Quiter-IEEE-400,
    title = "Nuclear Resonance Fluorescence for Materials Assay",
    journal = "IEEE Transactions on Nuclear Science",
    pages = "400--403",
    volume = "58",
    number = "2",
    year = "2011",
    doi = "10.1109/TNS.2011.2112777",
    url = "http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5722068&tag=1",
    author = "B.J. Quiter and B.A. Ludewigt and V.V. Mozin and and S.G. Prussin",
    }
  • B.A. Ludewigt, B.J. Quiter and S.D. Ambers Nuclear Resonance Fluorescence for Safeguards Applications (LBNL Report XXXXX) (2011) bibtex
    @techreport{ Ludewigt-LBNL-2011-02,
    title = "Nuclear Resonance Fluorescence for Safeguards Applications",
    number = "LBNL Report XXXXX",
    month = "February",
    year = "2011",
    author = "B.A. Ludewigt and B.J. Quiter and S.D. Ambers",
    }
  • Arun Persaud, Ian Allen, MichaelR. Dickinson, Thomas Schenkel, Rehan Kapadia, Kuniharu Takei and Ali Javey Development of a compact neutron source based on field ionization processes Journal of Vacuum Science and Technology B 29 02B107 (2011) pdf doi journal web page arXiv.org bibtex
    @article{ Persaud:JVSTB-29-02B107,
    eprint = "arXiv:1010.2252",
    title = "Development of a compact neutron source based on field ionization processes",
    year = "2011",
    journal = "Journal of Vacuum Science and Technology B",
    volume = "29",
    pages = "02B107",
    doi = "10.1116/1.3531929",
    url = "http://avspublications.org/jvstb/resource/1/jvtbd9/v29/i2/p02B107_s1",
    author = "Arun Persaud and Ian Allen and MichaelR. Dickinson and Thomas Schenkel and Rehan Kapadia and Kuniharu Takei and Ali Javey",
    }
  • Ole Waldmann and Bernhard Ludewigt A Permanent-Magnet Microwave Ion Source for a Compact High-Yield Neutron Generator AIP Conference Proceedings 1336 (2011) pdf bibtex
    @article{ Waldmann:10b,
    TITLE = "A Permanent-Magnet Microwave Ion Source for a Compact High-Yield Neutron Generator",
    JOURNAL = "AIP Conference Proceedings",
    YEAR = "2011",
    VOLUME = "1336",
    PAGES = "",
    FILE = "ole/waldmann10b.pdf",
    AUTHOR = "Ole Waldmann and Bernhard Ludewigt",
    }

2010

  • LeonardJ Bond, JeffreyW Griffin, KayteM Denslow, RobertV Harris, Thomas Schenkel, A.Persaud, GregoryE Dale, Avneet Sood, JamesT Rutledge, Scott Kovaleski and Frances Keel Nuclear Source Replacement in Petrochemical Well-Logging SEG Expanded Abstracts 29 518--522 (2010) doi journal web page bibtex
    @article{ Bond:SEG-29-518,
    title = "Nuclear Source Replacement in Petrochemical Well-Logging",
    journal = "SEG Expanded Abstracts",
    pages = "518--522",
    volume = "29",
    year = "2010",
    url = "http://link.aip.org/link/?SEGEAB/29/518/1",
    doi = "10.1190/1.3513833",
    author = "LeonardJ Bond and JeffreyW Griffin and KayteM Denslow and RobertV Harris and Thomas Schenkel and A.Persaud and GregoryE Dale and Avneet Sood and JamesT Rutledge and Scott Kovaleski and Frances Keel",
    }
  • B.A. Ludewigt, B.J. Quiter and S.D. Ambers Nuclear Resonance Fluorescence to Measure Plutonium Mass in Spent Nuclear Fuel (LBNL Report XXXXX) (2010) bibtex
    @techreport{ Ludewigt-LBNL-2010-12,
    title = "Nuclear Resonance Fluorescence to Measure Plutonium Mass in Spent Nuclear Fuel",
    number = "LBNL Report XXXXX",
    month = "December",
    year = "2010",
    author = "B.A. Ludewigt and B.J. Quiter and S.D. Ambers",
    }
  • DavidM. Toyli, ChristophD. Weis, GregoryD. Fuchs, Thomas Schenkel and DavidD. Awschalom Chip-Scale Nanofabrication of Single Spins and Spin Arrays in Diamond Nano Lett. 10(8) 3168--3172 (2010) doi bibtex
    @article{ Toyli:NL-10-3168,
    journal = "Nano Lett.",
    title = "Chip-Scale Nanofabrication of Single Spins and Spin Arrays in Diamond",
    abstract = "We demonstrate a technique to nanofabricate nitrogen vacancy (NV) centers in diamond based on broad-beam nitrogen implantation through apertures in electron beam lithography resist. This method enables high-throughput nanofabrication of single NV centers on sub-100-nm length scales. Secondary ion mass spectroscopy measurements facilitate depth profiling of the implanted nitrogen to provide three-dimensional characterization of the NV center spatial distribution. Measurements of NV center coherence with on-chip coplanar waveguides suggest a pathway for incorporating this scalable nanofabrication technique in future quantum applications.",
    number = "8",
    pages = "3168--3172",
    volume = "10",
    year = "2010",
    doi = "10.1021/nl102066q",
    author = "DavidM. Toyli and ChristophD. Weis and GregoryD. Fuchs and Thomas Schenkel and DavidD. Awschalom",
    }
  • G.D. Fuchs, V.V. Dobrovitski, D.M. Toyli, F.J. Heremans, C.D. Weis, Thomas Schenkel and D.D. Awschalom Excited-state spin coherence of a single nitrogen-vacancy centre in diamond Nature Physics 6(9) 668--672 (2010) doi bibtex
    @article{ Fuchs:NP-9-668,
    journal = "Nature Physics",
    title = "Excited-state spin coherence of a single nitrogen-vacancy centre in diamond",
    abstract = "Nitrogen-vacancy centres in diamond are a solid-state analogue of trapped atoms, with fine structure in both the ground and excited states that may be used for advanced quantum control. These centres are promising candidates for spin-based quantum information processing1-3 and magnetometry4-6 at room temperature. Knowledge of the excited-state (ES) structure and coherence is critical to evaluating the ES as a room-temperature quantum resource, for example for a fast, optically gated swap operation with a nuclear-spin memory(7). Here we report experiments that probe the ES-spin coherence of single nitrogen-vacancy centres. Using a combination of pulsed-laser excitation and nanosecond-scale microwave manipulation, we observed ES Rabi oscillations, and multipulse resonant control enabled us to study coherent ES electron/nuclear-spin interactions. To understand these processes, we developed a finite-temperature theory of ES spin dynamics that also provides a pathway towards engineering longer ES spin coherence.",
    number = "9",
    pages = "668--672",
    volume = "6",
    year = "2010",
    doi = "10.1038/NPHYS1716",
    author = "G.D. Fuchs and V.V. Dobrovitski and D.M. Toyli and F.J. Heremans and C.D. Weis and Thomas Schenkel and D.D. Awschalom",
    }
  • Q.Ji, A.Sy and J.W. Kwan Radio frequency-driven proton source with a back-streaming electron dump Review of Scientific Instruments 81(2) 02B312 (2010) pdf doi bibtex
    @article{ Ji:RoSI-81-02B312,
    Title = "Radio frequency-driven proton source with a back-streaming electron dump",
    Journal = "Review of Scientific Instruments",
    Year = "2010",
    Volume = "81",
    Number = "2",
    Pages = "02B312",
    Month = "February",
    Abstract = "This article describes an rf ion source with a back-streaming electron dump. A quartz tube, brazed to a metal plug at one end, is fused in the center of a flat quartz plate. rf power (at 13.6 MHz) is coupled to generate hydrogen plasma using a planar external antenna bonded to the window. Bonding the water-cooled rf antenna to the quartz window significantly lowers its temperature. The water-cooled metal plug serves as the back-streaming electron dump. At 1800 W, the current density of extracted hydrogen ions reaches approximately 125 mA/cm/sup 2/.",
    Publisher = "American Institute of Physics",
    ISSN = "0034-6748",
    doi = "10.1063/1.3267832",
    Author = "Q.Ji and A.Sy and J.W. Kwan",
    }
  • A.Persaud, J.W. Kwan, M.Leitner, K.-N. Leung, B.Ludewigt, N.Tanaka, W.Waldron, S.Wilde, A.J. Antolak, D.H. Morse and T.Raber A tandem-based compact dual-energy gamma generator Review of Scientific Instruments 81(2) 02B904 (2010) doi journal web page bibtex
    @article{ Persaud:RoSI-81-02B904,
    title = "A tandem-based compact dual-energy gamma generator",
    journal = "Review of Scientific Instruments",
    volume = "81",
    number = "2",
    pages = "02B904",
    year = "2010",
    url = "http://rsi.aip.org/resource/1/rsinak/v81/i2/p02B904_s1",
    doi = "10.1063/1.3258028",
    author = "A.Persaud and J.W. Kwan and M.Leitner and K.-N. Leung and B.Ludewigt and N.Tanaka and W.Waldron and S.Wilde and A.J. Antolak and D.H. Morse and T.Raber",
    }

2009

  • B.J. Quiter, B.A. Ludewigt, V.V. Mozin and S.J. Tobin Nondestructive Spent Fuel Assay Using Nuclear Resonance Fluorescence in Institute of Nuclear Materials Management 50th Annual Meeting (2009) bibtex
    @inproceeding{ Quiter-2009,
    title = "Nondestructive Spent Fuel Assay Using Nuclear Resonance Fluorescence",
    booktitle = "Institute of Nuclear Materials Management 50th Annual Meeting",
    year = "2009",
    author = "B.J. Quiter and B.A. Ludewigt and V.V. Mozin and S.J. Tobin",
    }
  • S.J. Tobin, M.L. Fensin, B.A. Ludewigt, H.O. Menlove, B.J. Quiter, N.P. Sandoval, M.T. Swinhoe, S.J. Thompson Determining Plutonium Mass in Spent Fuel with Nondestructive Assay Techniques - Preliminary Modeling Results Emphasizing Integration among Techniques in Global, Paris (2009) bibtex
    @inproceeding{ Tobin-Paris-2009,
    title = "Determining Plutonium Mass in Spent Fuel with Nondestructive Assay Techniques - Preliminary Modeling Results Emphasizing Integration among Techniques",
    booktitle = "Global, Paris",
    year = "2009",
    author = "S.J. Tobin and M.L. Fensin and B.A. Ludewigt and H.O. Menlove and B.J. Quiter and N.P. Sandoval and M.T. Swinhoe and S.J. Thompson",
    }
  • S.J. Tobin, N.P. Sandoval, M.L. Fensin, S.Y. Lee, B.A. Ludewigt, H.O. Menlove, B.J. Quiter, A.Rajasingum, M.A. Schear, L.E. Smith, M.T. Swinhoe, S.J. Thompson Determination of Plutonium Content in Spent Fuel with Nondestructive Assay in Institute of Nuclear Materials Management (2009) bibtex
    @inproceeding{ Tobin-2009,
    title = "Determination of Plutonium Content in Spent Fuel with Nondestructive Assay",
    booktitle = "Institute of Nuclear Materials Management",
    year = "2009",
    author = "S.J. Tobin and N.P. Sandoval and M.L. Fensin and S.Y. Lee and B.A. Ludewigt and H.O. Menlove and B.J. Quiter and A.Rajasingum and M.A. Schear and L.E. Smith and M.T. Swinhoe and S.J. Thompson",
    }
  • Qing Ji, J.Kwan, M.Regis, Y.Wu, S.B. Wilde and J.Wallig Fast fall-time ion beam in neutron generators in AIP Conference Proceedings 1099 660-5 (2009) bibtex
    @inproceedings{ Ji:AIP-1099-660,
    Title = "Fast fall-time ion beam in neutron generators",
    Booktitle = "AIP Conference Proceedings",
    Year = "2009",
    Volume = "1099",
    Pages = "660-5",
    Month = "2009",
    Abstract = "Ion beam with a fast fall time is useful in building neutron generators for the application of detecting hidden, gamma-shielded SNM using differential die-away (DDA) technique. Typically a fall time of less than 1 mu s can't be achieved by just turning off the power to the ion source due to the slow decay of plasma density (partly determined by the fall time of the RF power in the circuit). In this paper, we discuss the method of using an array of mini-apertures (instead of one large aperture beam) such that gating the beamlets can be done with low voltage and a small gap. This geometry minimizes the problem of voltage breakdown as well as reducing the time of flight to produce fast gating. We have designed and fabricated an array of 16 apertures (4*4) for a beam extraction experiment. Using a gating voltage of 1400 V and a gap distance of 1 mm, the fall time of extracted ion beam pulses is less than 1 mu s at various beam energies ranging between 400 eV to 800 eV. Usually merging an array of beamlets suffers the loss of beam brightness, i.e., emittance growth, but that is not an important issue for neutron source applications.",
    Publisher = "AIP",
    Address = "USA",
    Author = "Qing Ji and J.Kwan and M.Regis and Y.Wu and S.B. Wilde and J.Wallig",
    }
  • Qing Ji, Ying Wu, M.Regis and J.W. Kwan Initial testing of a compact portable microwave-driven neutron generator IEEE Transactions on Nuclear Science 56(3) 1312-15 (2009) bibtex
    @article{ Ji:IEEE-56-1312,
    Title = "Initial testing of a compact portable microwave-driven neutron generator",
    Journal = "IEEE Transactions on Nuclear Science",
    Year = "2009",
    Volume = "56",
    Number = "3",
    Pages = "1312-15",
    Month = "June",
    Abstract = "A portable, moderate yield D-D neutron generator based on permanent magnet microwave ion source is being developed at Lawrence Berkeley National Laboratory for applications such as short range SNM detection in suitcases and small parcels. Microwave power (2.45 GHz) can be coupled to a pyrex tube through a standard wave guide and generate plasma. In this source configuration, the wave guide serves as a secondary containment for sealed tube design. Hydrogen plasma has been successfully ignited in the pyrex tube at a microwave power of 200 W. The 2.45 GHz microwave signal can also be directly coupled to the wave guide through a standard coaxial cable with a N-type connection and generate plasma. Preliminary results show that over 60\% of atomic hydrogen ions were generated at a microwave power of 300 W. Higher atomic fraction is expected with insertion of boron nitride liner. The current density at power of 200 W (with an extraction aperture of 2 mm in diameter, and gas flow at 0.2 sccm) was approximately 22 mA/cm/sup 2/.",
    Publisher = "IEEE",
    ISSN = "0018-9499",
    Author = "Qing Ji and Ying Wu and M.Regis and J.W. Kwan",
    }
  • MichaelJoseph King, GillT. Miller, Jani Reijonen, Qing Ji, Nord Andresen, Frederic Gicquel, Taneli Kalvas, Ka-Ngo Leung and JoeW. Kwan Initial Evaluation of a Pulsed White Spectrum Neutron Generator for Explosive Detection IEEE Transactions on Nuclear Science 56(3, Part 2) 1283-1287 (2009) doi bibtex
    @article{ King:IEEE-56-1283,
    Title = "Initial Evaluation of a Pulsed White Spectrum Neutron Generator for Explosive Detection",
    Journal = "IEEE Transactions on Nuclear Science",
    Year = "2009",
    Volume = "56",
    Number = "3, Part 2",
    Pages = "1283-1287",
    Month = "Jun",
    Abstract = "Successful explosive material detection in luggage and similar sized containers is a critical issue in securing the safety of all airline passengers. Tensor Technology Inc. has recently developed a methodology that will detect explosive compounds with pulsed fast neutron transmission spectroscopy. In this scheme, tritium beams will be used to generate neutrons with a broad energy spectrum as governed by the T(t,2n)4He fission reaction that produces 0-9 MeV neutrons. Lawrence Berkeley National Laboratory, in collaboration with Tensor Technology Inc., has designed and fabricated a pulsed white-spectrum neutron source for this application. The specifications of the neutron source are demanding and stringent due to the requirements of high yield and fast pulsing neutron emission, and sealed tube, tritium operation. In a unique co-axial geometry, the ion source uses ten parallel rf induction antennas to externally couple power into a toroidal discharge chamber. There are 20 ion beam extraction slits and three concentric electrode rings to shape and accelerate the ion beam into a titanium cone target. Fast neutron pulses are created by using a set of parallel-plate deflectors switching between +/- 750 V and deflecting the ion beams across a narrow slit. The generator is expected to achieve 5 ns neutron pulses at tritium ion beam energies between 80-120 kV. First experiments demonstrated ion source operation and successful beam pulsing.",
    Publisher = "IEEE-Inst Electrical Electronics Engineers INC",
    Type = "article",
    DOI = "10.1109/TNS.2009.2015306",
    Author = "MichaelJoseph King and GillT. Miller and Jani Reijonen and Qing Ji and Nord Andresen and Frederic Gicquel and Taneli Kalvas and Ka-Ngo Leung and JoeW. Kwan",
    }
  • C.C. Lo, A.Persaud, S.Duhey, D.Olynick, F.Borondics, M.C. Martin, H.A. Bechtel, J.Bokor and T.Schenkel Device fabrication and transport measurements of FinFETs built with $^28$Si SOI wafers towards donor qubits in silicon Semiconductor Science and Technology 24(10) 105022 (2009) doi journal web page arXiv.org bibtex
    @article{ Lo:SST-24-105022,
    title = "Device fabrication and transport measurements of FinFETs built with $^28$Si SOI wafers towards donor qubits in silicon",
    eprint = "arXiv:0906.1995v1",
    journal = "Semiconductor Science and Technology",
    volume = "24",
    number = "10",
    pages = "105022",
    url = "http://stacks.iop.org/0268-1242/24/105022",
    year = "2009",
    doi = "10.1088/0268-1242/24/10/105022",
    author = "C.C. Lo and A.Persaud and S.Duhey and D.Olynick and F.Borondics and M.C. Martin and H.A. Bechtel and J.Bokor and T.Schenkel",
    }
  • T.Schenkel, C.C. Lo, C.D. Weis, A.Schuh, A.Persaud and J.Bokor Critical issues in the formation of quantum computer test structures by ion implantation Nuclear Instruments and Methods in Physics Research B 267(16) 2563--2566 (2009) doi arXiv.org bibtex
    @article{ Schenkel:NIMB-267-2563,
    title = "Critical issues in the formation of quantum computer test structures by ion implantation",
    abstract = "The formation of quantum computer test structures in silicon by ion implantation enables the characterization of spin readout mechanisms with ensembles of dopant atoms and the development of single atom devices. We briefly review recent results in the characterization of spin dependent transport and single ion doping and then discuss the diffusion and segregation behaviour of phosphorus, antimony and bismuth ions from low fluence, low energy implantations as characterized through depth profiling by secondary ion mass spectrometry (SIMS). Both phosphorus and bismuth are found to segregate to the SiO2/Si interface during activation anneals, while antimony diffusion is found to be minimal. An effect of the ion charge state on the range of antimony ions, Sb-121(25+), in SiO2/Si is also discussed. (C) 2009 Elsevier B. V. All rights reserved.",
    eprint = "arXiv:0904.4688v1",
    journal = "Nuclear Instruments and Methods in Physics Research B",
    year = "2009",
    volume = "267",
    number = "16",
    pages = "2563--2566",
    doi = "10.1016/j.nimb.2009.05.061",
    author = "T.Schenkel and C.C. Lo and C.D. Weis and A.Schuh and A.Persaud and J.Bokor",
    }
  • E.Sideras-Haddad, T.Schenkel, S.Shrivastava, T.Makgato, A.Batra, C.D. Weis, A.Persaud, R.Erasmus and B.Mwakikunga Possible diamond-like nanoscale structures induced by slow highly-charged ions on graphite (HOPG) Nuclear Instruments and Methods in Physics Research B 267(16) 2774--2777 (2009) doi bibtex
    @article{ Sideras-Haddad:NIMB-267-2774,
    title = "Possible diamond-like nanoscale structures induced by slow highly-charged ions on graphite (HOPG)",
    abstract = "The interaction between slow highly-charged ions (SHCI) of different charge states from an electron-beam ion trap and highly-oriented pyrolytic graphite (HOPG) surfaces is studied in terms of modification of electronic states at single-ion impact nanosize areas. Results are presented from AFM/STM analysis of the induced-surface topological features combined with Raman spectroscopy. I-V characteristics for a number of different impact regions were measured with STM and the results argue for possible formation of diamond-like nanoscale structures at the impact sites. (C) 2009 Published by Elsevier B. V.",
    journal = "Nuclear Instruments and Methods in Physics Research B",
    year = "2009",
    volume = "267",
    number = "16",
    pages = "2774--2777",
    doi = "10.1016/j.nimb.2009.05.060",
    author = "E.Sideras-Haddad and T.Schenkel and S.Shrivastava and T.Makgato and A.Batra and C.D. Weis and A.Persaud and R.Erasmus and B.Mwakikunga",
    }
  • C.D. Weis, A.Schuh, A.Batra, A.Persaud, I.W. Rangelow, J.Bokor, C.C. Lo, S.Cabrini, D.Olynick, S.Duhey and T.Schenkel Mapping of ion beam induced current changes in FinFETs Nuclear Instruments and Methods in Physics Research B 267(8--9) 1222--1225 (2009) doi arXiv.org bibtex
    @article{ Weis:NIMB-267-1222,
    title = "Mapping of ion beam induced current changes in FinFETs",
    abstract = "We report on progress in ion placement into silicon devices with scanning probe alignment. The device is imaged with a scanning force microscope (SFM) and an aligned argon beam (20 keV, 36 keV) is scanned over the transistor surface. Holes in the lever of the SFM tip collimate the argon beam to sizes of 1.6 mu m and 100 nm in diameter. Ion impacts upset the channel current due to formation of positive charges in the oxide areas. The induced changes in the source-drain current are recorded in dependence of the ion beam position with respect to the FinFET. Maps of local areas responding to the ion beam are obtained. (C) 2009 Elsevier B.V. All rights reserved.",
    journal = "Nuclear Instruments and Methods in Physics Research B",
    year = "2009",
    volume = "267",
    number = "8--9",
    pages = "1222--1225",
    doi = "10.1016/j.nimb.2009.01.019",
    eprint = "arXiv:0809.2113v2",
    author = "C.D. Weis and A.Schuh and A.Batra and A.Persaud and I.W. Rangelow and J.Bokor and C.C. Lo and S.Cabrini and D.Olynick and S.Duhey and T.Schenkel",
    }
  • Y.Wu, J.P. Hurley, Q.Ji, J.Kwan and K.N. Leung Development of a RF-Driven Neutron Generator for Associated Particle Imaging IEEE Transactions on Nuclear Science 56(3, Part 2) 1306-1311 (2009) doi bibtex
    @article{ Wu:IEEE-56-1306,
    Title = "Development of a RF-Driven Neutron Generator for Associated Particle Imaging",
    Journal = "IEEE Transactions on Nuclear Science",
    Year = "2009",
    Volume = "56",
    Number = "3, Part 2",
    Pages = "1306-1311",
    Month = "Jun",
    Abstract = "We present recent work in the development of a compact, radio frequency (RF) D-T neutron generator with a maximum neutron yield of 10(8) n/s for the application of associated particle imaging (API) used in explosive and contraband detection. API makes use of alpha particles produced in conjunction with 14 MeV neutrons in the D-T reaction to locate the neutron interaction and reduce background noise. To achieve high spatial resolution in API, a beam diameter of <= 1 nun on target is desired. For portable neutron generators used in API, the ion source and target cannot be water-cooled and the power deposited on the target must be low. By increasing the atomic ion fraction, the ion beam can be used more efficiently to generate neutrons, resulting in a lower beam power requirement and an increased lifetime of the alpha detector inside the acceleration column. The RF ion source produces very high atomic ion fractions (> 90\%) compared to traditional Penning ion sources that produce less than 10\% of atomic ions. Experimental measurements of the ion source plasma parameters including ion current density, atomic ion fraction, ignition and operating pressures, will be presented along with a discussion on the ion optics and engineering challenges.",
    Publisher = "IEEE-Inst Electrical Electronics Engineers Inc",
    DOI = "10.1109/TNS.2009.2012706",
    ISSN = "0018-9499",
    Author = "Y.Wu and J.P. Hurley and Q.Ji and J.Kwan and K.N. Leung",
    }

2008

  • G.D. Fuchs, V.V. Dobrovitski, R.Hanson, A.Batra, C.D. Weis, T.Schenkel and D.D. Awschalom Excited-State Spectroscopy Using Single Spin Manipulation in Diamond Physical Review Letters 101(11) 117601 (2008) pdf doi bibtex
    @article{ Fuchs:PRL-101-117601,
    title = "Excited-State Spectroscopy Using Single Spin Manipulation in Diamond",
    abstract = "We use single-spin resonant spectroscopy to study the spin structure in the orbital excited state of a diamond nitrogen-vacancy (N-V) center at room temperature. The data show that the excited-state spin levels have a zero-field splitting that is approximately half of the value of the ground state levels, a g factor similar to the ground state value, and a hyperfine splitting similar to 20x larger than in the ground state. In addition, the width of the resonances reflects the electronic lifetime in the excited state. We also show that the spin level splitting can significantly differ between N-V centers, likely due to the effects of local strain, which provides a pathway to control over the spin Hamiltonian and may be useful for quantum-information processing.",
    journal = "Physical Review Letters",
    volume = "101",
    number = "11",
    pages = "117601",
    year = "2008",
    doi = "10.1103/PhysRevLett.101.117601",
    author = "G.D. Fuchs and V.V. Dobrovitski and R.Hanson and A.Batra and C.D. Weis and T.Schenkel and D.D. Awschalom",
    }
  • J.J.L. Morton, A.M. Tyryshkin, R.M. Brown, S.Shankar, B.W. Lovett, A.Ardavan, T.Schenkel, E.E. Haller, J.W. Ager and S.A. Lyon Solid-state quantum memory using the $^31$P nuclear spin Nature 455(23) 1085--1088 (2008) pdf bibtex
    @article{ Morton:Nature-455-1085,
    title = "Solid-state quantum memory using the $^31$P nuclear spin",
    journal = "Nature",
    volume = "455(23)",
    pages = "1085--1088",
    year = "2008",
    author = "J.J.L. Morton and A.M. Tyryshkin and R.M. Brown and S.Shankar and B.W. Lovett and A.Ardavan and T.Schenkel and E.E. Haller and J.W. Ager and S.A. Lyon",
    }
  • M.Sarovar, K.C. Young, T.Schenkel and K.B. Whaley Quantum nondemolition measurements of single donor spins in semiconductors Physical Review B 78 245302 (2008) pdf doi journal web page bibtex
    @article{ Saraovar:PRB-78-245302,
    title = "Quantum nondemolition measurements of single donor spins in semiconductors",
    journal = "Physical Review B",
    volume = "78",
    pages = "245302",
    year = "2008",
    doi = "10.1103/PhysRevB.78.245302",
    url = "http://link.aps.org/doi/10.1103/PhysRevB.78.245302",
    author = "M.Sarovar and K.C. Young and T.Schenkel and K.B. Whaley",
    }
  • C.D. Weis, A.Schuh, A.Batra, A.Persaud, I.W. Rangelow, J.Bokor, C.C. Lo, S.Cabrini, E.Sideras-Haddad, G.D. Fuchs, R.Hanson, D.D. Awschalom and T.Schenkel Single atom doping for quantum device development in diamond and silicon Journal of Vacuum Science and Technology B 26(6) 2596--2600 (2008) pdf doi bibtex
    @article{ Weis:JVST-26-2596,
    title = "Single atom doping for quantum device development in diamond and silicon",
    abstract = "The ability to inject dopant atoms with high spatial resolution, flexibility in dopant species, and high single ion detection fidelity opens opportunities for the study of dopant fluctuation effects and the development of devices in which function is based on the manipulation of quantum states in single atoms, such as proposed quantum computers. The authors describe a single atom injector, in which the imaging and alignment capabilities of a scanning force microscope (SFM) are integrated with ion beams from a series of ion sources and with sensitive detection of current transients induced by incident ions. Ion beams are collimated by a small hole in the SFM tip and current changes induced by single ion impacts in transistor channels enable reliable detection of single ion hits. They discuss resolution limiting factors in ion placement and processing and paths to single atom (and color center) array formation for systematic testing of quantum computer architectures in silicon and diamond.",
    journal = "Journal of Vacuum Science and Technology B",
    volume = "26",
    number = "6",
    pages = "2596--2600",
    year = "2008",
    doi = "10.1116/1.2968614",
    author = "C.D. Weis and A.Schuh and A.Batra and A.Persaud and I.W. Rangelow and J.Bokor and C.C. Lo and S.Cabrini and E.Sideras-Haddad and G.D. Fuchs and R.Hanson and D.D. Awschalom and T.Schenkel",
    }

2007

  • A.Batra, C.D. Weis, J.Reijonen, A.Persaud, S.Cabrini, C.C. Lo, J.Bokor and T.Schenkel Detection of low energy single ion impacts in micron scale transistors at room temperature Applied Physics Letters 91(19) 193502 (2007) pdf doi bibtex
    @article{ Batra:APL-91-193502,
    title = "Detection of low energy single ion impacts in micron scale transistors at room temperature",
    journal = "Applied Physics Letters",
    abstract = "We report the detection of single ion impacts through monitoring of changes in the source-drain currents of field effect transistors at room temperature. Implant apertures are formed in the interlayer dielectrics and gate electrodes of planar, microscale transistors by electron beam assisted etching. Device currents increase due to the generation of positively charged defects in gate oxides when ions (Sb-121(12+,14+) and Xe6+; 50-70 keV) impinge into channel regions. Implant damage is repaired by rapid thermal annealing, enabling iterative cycles of device doping and electrical characterization for the development of single atom devices and studies of dopant fluctuation effects.",
    doi = "10.1063/1.2805634",
    year = "2007",
    volume = "91",
    number = "19",
    pages = "193502",
    author = "A.Batra and C.D. Weis and J.Reijonen and A.Persaud and S.Cabrini and C.C. Lo and J.Bokor and T.Schenkel",
    }
  • G.Chai, H.Heinrich, L.Chow and T.Schenkel Electron transport through single carbon nanotubes Applied Physics Letters 91 103101 (2007) pdf bibtex
    @article{ Chai:APL-91-103101,
    title = "Electron transport through single carbon nanotubes",
    journal = "Applied Physics Letters",
    volume = "91",
    pages = "103101",
    year = "2007",
    author = "G.Chai and H.Heinrich and L.Chow and T.Schenkel",
    }
  • L.Ji, J.-K. Kim, Q.Ji, K.-N. Leung, Y.Chen and R.A. Gough Conformal metal thin-film coatings in high-aspect-ratio trenches using a self-sputtered rf-driven plasma source Journal of Vacuum Science & Technology B 25(4) 1227-1230 (2007) doi bibtex
    @article{ Ji:JVST-25-1227,
    Title = "Conformal metal thin-film coatings in high-aspect-ratio trenches using a self-sputtered rf-driven plasma source",
    Journal = "Journal of Vacuum Science & Technology B",
    Year = "2007",
    Volume = "25",
    Number = "4",
    Pages = "1227-1230",
    Month = "JUL-AUG",
    Abstract = "A thin-film coating system has been developed for the deposition of both conductive and insulating materials. The system employs a radio-frequency (rf)-discharge plasma source with four straight rf antennas, which is made of or covered with the deposition material, thus serving simultaneously as a sputtering target. The average deposition rate of the copper thin film can be as high as 500 nm/min when operated under continuous-wave mode. Film properties under different operating conditions (gas pressure and rf power) have been investigated experimentally. Three thin-film coating schemes have been developed, one of which has been demonstrated to be suitable for conformal deep-trench coating. Conformal coating over trenches of high-aspect ratio (>6: 1) has been demonstrated at both micron and submicron scales. (c) 2007 American Vacuum Society.",
    Publisher = "A V S AMER INST PHYSICS",
    DOI = "10.1116/1.2749527",
    ISSN = "1071-1023",
    Author = "L.Ji and J.-K. Kim and Q.Ji and K.-N. Leung and Y.Chen and R.A. Gough",
    }
  • L.Ji, J.-K. Kim, Q.Ji, K.-N. Leung, Y.Chen and R.A. Gough Conformal metal thin-film coatings in high-aspect-ratio trenches using a self-sputtered rf-driven plasma source Journal of Vacuum Science & Technology B 25(4) 1227-1230 (2007) doi bibtex
    @article{ Ji:JVSTB-25-1227,
    Title = "Conformal metal thin-film coatings in high-aspect-ratio trenches using a self-sputtered rf-driven plasma source",
    Journal = "Journal of Vacuum Science & Technology B",
    Year = "2007",
    Volume = "25",
    Number = "4",
    Pages = "1227-1230",
    Month = "Jul-Aug",
    Abstract = "A thin-film coating system has been developed for the deposition of both conductive and insulating materials. The system employs a radio-frequency (rf)-discharge plasma source with four straight rf antennas, which is made of or covered with the deposition material, thus serving simultaneously as a sputtering target. The average deposition rate of the copper thin film can be as high as 500 nm/min when operated under continuous-wave mode. Film properties under different operating conditions (gas pressure and rf power) have been investigated experimentally. Three thin-film coating schemes have been developed, one of which has been demonstrated to be suitable for conformal deep-trench coating. Conformal coating over trenches of high-aspect ratio (>6: 1) has been demonstrated at both micron and submicron scales. (c) 2007 American Vacuum Society.",
    Publisher = "A V S Amer Inst Physics",
    DOI = "10.1116/1.2749527",
    ISSN = "1071-1023",
    Author = "L.Ji and J.-K. Kim and Q.Ji and K.-N. Leung and Y.Chen and R.A. Gough",
    }
  • C.C. Lo, J.Bokor, T.Schenkel, A.M. Tyryshkin and S.A. Lyon Spin-Dependent Scattering off Neutral Antimony Donors in 28Si Field-Effect Transistors Applied Physics Letters 91 242106 (2007) bibtex
    @article{ Lo:APL-91-242106,
    title = "Spin-Dependent Scattering off Neutral Antimony Donors in 28Si Field-Effect Transistors",
    journal = "Applied Physics Letters",
    volume = "91",
    pages = "242106",
    year = "2007",
    author = "C.C. Lo and J.Bokor and T.Schenkel and A.M. Tyryshkin and S.A. Lyon",
    }
  • W.J. MoberlyChan, D.P. Adams, M.J. Aziz, G.Hobler and T.Schenkel Fundamentals of Focused Ion Beam Nanostructural Processing: Below, At, and Above the Surface MRS Bulletin 32(5) 424 (2007) pdf bibtex
    @article{ MoberlyChan:MRS-32-424,
    title = "Fundamentals of Focused Ion Beam Nanostructural Processing: Below, At, and Above the Surface",
    journal = "MRS Bulletin",
    volume = "32(5)",
    pages = "424",
    year = "2007",
    author = "W.J. MoberlyChan and D.P. Adams and M.J. Aziz and G.Hobler and T.Schenkel",
    }
  • S.J. Robinson, C.L. Perkins, T.C. Shen, J.R. Tucker, T.Schenkel, X.W. Wang and T.P. Ma Low-temperature charge transport in Ga-acceptor nanowires implanted by focused-ion beams Applied Physics Letters 91 122105 (2007) pdf bibtex
    @article{ Robinson:APL-91-122105,
    title = "Low-temperature charge transport in Ga-acceptor nanowires implanted by focused-ion beams",
    journal = "Applied Physics Letters",
    volume = "91",
    pages = "122105",
    year = "2007",
    author = "S.J. Robinson and C.L. Perkins and T.C. Shen and J.R. Tucker and T.Schenkel and X.W. Wang and T.P. Ma",
    }
  • D.Schneider, J.McDonald, B.Zielbauer, D.Ursescu, U.Spillmann, T.Stoelker, T.Kuehl, T.Schenkel, G.Andler, E.Lindroth and R.Schuch Electromagnetically confined plasma target for interaction studies with intense laser fields Nuclear Instruments and Methods in Physics Research B 261 239 (2007) pdf bibtex
    @article{ Schneider:NIMB-239-2007,
    title = "Electromagnetically confined plasma target for interaction studies with intense laser fields",
    journal = "Nuclear Instruments and Methods in Physics Research B",
    volume = "261",
    pages = "239",
    year = "2007",
    author = "D.Schneider and J.McDonald and B.Zielbauer and D.Ursescu and U.Spillmann and T.Stoelker and T.Kuehl and T.Schenkel and G.Andler and E.Lindroth and R.Schuch",
    }
  • E.Sideras-Haddad, T.Schenkel, D.B. Rebuli, A.Persaud, S.Shrivastava, D.H. Schneider and B.Mwakikunga Electron emission and defect formation in the interaction of slow, highly charged ions with diamond surfaces Nuclear Instruments and Methods in Physics Research B 256(1) 464--467 (2007) pdf bibtex
    @article{ Sideras-Haddad:NIMB-256-464,
    title = "Electron emission and defect formation in the interaction of slow, highly charged ions with diamond surfaces",
    journal = "Nuclear Instruments and Methods in Physics Research B",
    volume = "256",
    number = "1",
    pages = "464--467",
    year = "2007",
    author = "E.Sideras-Haddad and T.Schenkel and D.B. Rebuli and A.Persaud and S.Shrivastava and D.H. Schneider and B.Mwakikunga",
    }

2006

  • F.I. Allen, A.Persaud, S.J. Park, A.Minor, M.Sakurai, D.H. Schneider and T.Schenkel Transport of Multiply and Highly Charged Ions through Nanoscale Apertures in Silicon Nitride Membranes Nuclear Instruments and Methods in Physics Research B 244(2) 323--326 (2006) pdf bibtex
    @article{ Allen:NIMB-244-323,
    title = "Transport of Multiply and Highly Charged Ions through Nanoscale Apertures in Silicon Nitride Membranes",
    journal = "Nuclear Instruments and Methods in Physics Research B",
    volume = "244",
    number = "2",
    pages = "323--326",
    year = "2006",
    author = "F.I. Allen and A.Persaud and S.J. Park and A.Minor and M.Sakurai and D.H. Schneider and T.Schenkel",
    }
  • F.R. Bradbury, A.M. Tyryshkin, G.Sabouret, J.Bokor, T.Schenkel and S.A. Lyon Stark Tuning of Donor Electron Spins in Silicon Physical Review Letters 97 176404 (2006) pdf doi journal web page arXiv.org bibtex
    @article{ Bradbury:PRL-97-176404,
    title = "Stark Tuning of Donor Electron Spins in Silicon",
    eprint = "cond-mat/0603324",
    journal = "Physical Review Letters",
    volume = "97",
    pages = "176404",
    year = "2006",
    url = "http://link.aps.org/doi/10.1103/PhysRevLett.97.176404",
    doi = "10.1103/PhysRevLett.97.176404",
    author = "F.R. Bradbury and A.M. Tyryshkin and G.Sabouret and J.Bokor and T.Schenkel and S.A. Lyon",
    }
  • L.Ji, Q.Ji, K.-N. Leung and R.A. Gough Combined electron and focused ion beam system for improvement of secondary ion yield in secondary ion mass spectrometry instrument Applied Physics Letters 89(16) (2006) doi bibtex
    @article{ Ji:APL-89-164103,
    Title = "Combined electron and focused ion beam system for improvement of secondary ion yield in secondary ion mass spectrometry instrument",
    Journal = "Applied Physics Letters",
    Year = "2006",
    Volume = "89",
    Number = "16",
    Month = "OCT 16",
    Abstract = "Using a combined electron and focused ion beam system to improve performance of secondary ion mass spectrometry instruments has been investigated experimentally. The secondary ion yield for an Al target has been enhanced to about one order of magnitude higher with the postionization induced by the low energy electrons in the combined beam. It can be further improved with the increase of electron beam current. When the combined beam is applied to insulating targets, sample charging is also eliminated. For Teflon targets, the secondary ion signal is increased by more than a factor of 20. (c) 2006 American Institute of Physics.",
    Publisher = "Amer Inst Physics",
    Type = "article",
    DOI = "10.1063/1.2362996",
    Article-Number = "164103",
    ISSN = "0003-6951",
    Author = "L.Ji and Q.Ji and K.-N. Leung and R.A. Gough",
    }
  • Qing Ji, YeChen, Lili Ji, Ximan Jiang and Ka-Ngo Leung Ion beam imprinting system for nanofabrication Microelectronic Engineering 83(4-9) 796-9 (2006) doi bibtex
    @article{ Ji:ME-83-796,
    Title = "Ion beam imprinting system for nanofabrication",
    Journal = "Microelectronic Engineering",
    Year = "2006",
    Volume = "83",
    Number = "4-9",
    Month = "April-September",
    Pages = "796-9",
    Abstract = "An ion beam imprinting system has been developed in Lawrence Berkeley National Laboratory. In order to push ion beam imprinting technology to nanometer regime, it is very important to fabricate membranes with arrays of apertures only a few nanometers in diameter. In this article, we describe a simple method of forming nanopore arrays by simultaneously shrinking apertures of micrometer dimensions using plasma-assisted thin-film deposition. Nanopores of 13nm in diameter and nanoslits of 20nm in width have been fabricated. [All rights reserved Elsevier].",
    Publisher = "Elsevier",
    DOI = "10.1016/j.mee.2006.01.094",
    ISSN = "0167-9317",
    Author = "Qing Ji and YeChen and Lili Ji and Ximan Jiang and Ka-Ngo Leung",
    }
  • A.Persaud, K.Ivanova, Y.Sarov, Tzv. Ivanov, B.E. Volland, I.W. Rangelow, N.Nikolov, T.Schenkel, V.Djakov, D.W.K. Jenkins, J.Meijer, T.Vogel Micromachined piezoresistive proximal probe with integrated bimorph actuator for aligned single ion implantation Journal of Vacuum Science and Technology B 24(6) 3148--3151 (2006) pdf bibtex
    @article{ Persaud:JVSTB-24-3148,
    title = "Micromachined piezoresistive proximal probe with integrated bimorph actuator for aligned single ion implantation",
    journal = "Journal of Vacuum Science and Technology B",
    volume = "24",
    number = "6",
    pages = "3148--3151",
    year = "2006",
    author = "A.Persaud and K.Ivanova and Y.Sarov and Tzv. Ivanov and B.E. Volland and I.W. Rangelow and N.Nikolov and T.Schenkel and V.Djakov and D.W.K. Jenkins and J.Meijer and T.Vogel",
    }
  • T.Schenkel, A.M. Tyryshkin, R.deSousa, K.B. Whaley, J.Bokor, J.A. Liddle, A.Persaud, J.Shangkuan, I.Chakarov and S.A. Lyon Electrical activation and spin coherence of ultra low dose antimony implants in silicon Applied Physics Letters 88(11) 112101 (2006) pdf arXiv.org bibtex
    @article{ Schenkel:APL-88-112101,
    title = "Electrical activation and spin coherence of ultra low dose antimony implants in silicon",
    eprint = "cond-mat/0507318",
    journal = "Applied Physics Letters",
    volume = "88",
    number = "11",
    pages = "112101",
    year = "2006",
    author = "T.Schenkel and A.M. Tyryshkin and R.deSousa and K.B. Whaley and J.Bokor and J.A. Liddle and A.Persaud and J.Shangkuan and I.Chakarov and S.A. Lyon",
    }
  • T.Schenkel, J.A. Liddle, J.Bokor, A.Persaud, S.J. Park, J.Shangkuan, C.C. Lo, S.Kwon, S.A. Lyon, A.M. Tyryshkin, I.W. Rangelow, Y.Sarov, D.H. Schneider, J.Ager and R.deSousa Strategies for integration of donor electron spin qubits Microelectronic Engineering 83(4--9) 1814--1817 (2006) pdf bibtex
    @article{ Schenkel:ME-83-1814,
    title = "Strategies for integration of donor electron spin qubits",
    journal = "Microelectronic Engineering",
    volume = "83",
    number = "4--9",
    pages = "1814--1817",
    year = "2006",
    author = "T.Schenkel and J.A. Liddle and J.Bokor and A.Persaud and S.J. Park and J.Shangkuan and C.C. Lo and S.Kwon and S.A. Lyon and A.M. Tyryshkin and I.W. Rangelow and Y.Sarov and D.H. Schneider and J.Ager and R.deSousa",
    }
  • A.M. Tyryshkin, S.A. Lyon, T.Schenkel, J.Bokor, J.Chu, W.Jantasch, F.Schäffler, J.L. Truitt, S.N. Coppersmith and M.A. Eriksson Electron Spin Coherence in Silicon Physica E 35 257--263 (2006) pdf bibtex
    @article{ Tyryshkin:PE-35-257,
    title = "Electron Spin Coherence in Silicon",
    journal = "Physica E",
    volume = "35",
    pages = "257--263",
    year = "2006",
    author = "A.M. Tyryshkin and S.A. Lyon and T.Schenkel and J.Bokor and J.Chu and W.Jantasch and F.Schäffler and J.L. Truitt and S.N. Coppersmith and M.A. Eriksson",
    }

2005

  • J.Reijonen, F.Gicquel, S.K. Hahto, M.King, T.P. Lou and K.N. Leung D-D neutron generator development at LBNL Appl. Rad. Isotopes 63 757--763 (2005) bibtex
    @article{ Reijonen:ARI-63-757,
    title = "D-D neutron generator development at LBNL",
    journal = "Appl. Rad. Isotopes",
    volume = "63",
    pages = "757--763",
    year = "2005",
    author = "J.Reijonen and F.Gicquel and S.K. Hahto and M.King and T.P. Lou and K.N. Leung",
    }
  • S.K. Hahto, S.T. Hahto, K.N. Leung, J.Reijonen, T.G. Miller and P.K.Van Staagen Fast ion beam chopping system for neutron generators Rev. Sci. Instrum. 76 023304 (2005) journal web page bibtex
    @article{ Hahto:RSI-76-023304,
    title = "Fast ion beam chopping system for neutron generators",
    journal = "Rev. Sci. Instrum.",
    volume = "76",
    pages = "023304",
    year = "2005",
    url = "http://link.aip.org/link/RSINAK/v76/p023304/",
    author = "S.K. Hahto and S.T. Hahto and K.N. Leung and J.Reijonen and T.G. Miller and P.K.Van Staagen",
    }
  • Ximan Jiang, YeChen, Lili Ji, Qing Ji and Ka-Ngo Leung Development of a 27.12 MHz radio frequency driven ion source with 3 mTorr operation pressure for neutron generators Rev. Sci. Instrum. 76 103302 (2005) journal web page bibtex
    @article{ Jiang:RSI-76-103302,
    title = "Development of a 27.12 MHz radio frequency driven ion source with 3 mTorr operation pressure for neutron generators",
    journal = "Rev. Sci. Instrum.",
    volume = "76",
    pages = "103302",
    year = "2005",
    url = "http://link.aip.org/link/RSINAK/v76/p103302/",
    author = "Ximan Jiang and YeChen and Lili Ji and Qing Ji and Ka-Ngo Leung",
    }
  • J.Qing, KNLeung, TJKing, XMJiang and BRAppleton Development of focused ion beam systems with various ion species Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms 241(1-4) 335-340 (2005) doi bibtex
    @article{ Ji:NIMB-241-335,
    Title = "Development of focused ion beam systems with various ion species",
    Journal = "Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms",
    Year = "2005",
    Volume = "241",
    Number = "1-4",
    Pages = "335-340",
    Month = "Dec",
    Abstract = "Conventional focused ion beam systems employ a liquid-metal ion source (LMIS) to generate high-brightness beams, such as Ga+ beams. Recently there has been an increased need for focused ion beams in areas like biological studies, advanced magnetic-film manufacturing and secondary-ion mass spectroscopy (SIMS). In this article, status of development on focused ion beam systems with ion species such as O-2(+), P+, and B+ will be reviewed. Compact col umns for forming focused ion beams from low energy (similar to 3 keV), to intermediate energy (similar to 35 keV) are discussed. By using focused ion beams, a SOI MOSFET is fabricated entirely without any masks or resist. (c) 2005 Elsevier B.V. All rights reserved.",
    Publisher = "Elsevier Science BV",
    DOI = "10.1016/j.nimb.2005.07.039",
    Author = "J.Qing and KNLeung and TJKing and XMJiang and BRAppleton",
    }
  • Ximan Jiang, YeChen, Lili Ji, Qing Ji and Ka-Ngo Leung Development of a 27.12 MHz radio frequency driven ion source with 3 mTorr operation pressure for neutron generators Review of Scientific Instruments 76(10) 103302-1-4 (2005) bibtex
    @article{ Jiang:RoSI-76-103302,
    Title = "Development of a 27.12 MHz radio frequency driven ion source with 3 mTorr operation pressure for neutron generators",
    Journal = "Review of Scientific Instruments",
    Year = "2005",
    Volume = "76",
    Number = "10",
    Pages = "103302-1-4",
    Month = "October",
    Abstract = "An inductively coupled rf plasma ion source has been developed for neutron generators. The ion source configuration has been optimized for low pressure operation. Both 13.56 and 27.12 MHz rf powers have been used to generate hydrogen plasma. Experimental results show that 27.12 MHz operation is more efficient than 13.56 MHz in a low pressure region. The ion source can also be operated in pulsed mode. Current density higher than 30 mA/cm/sup 2/ can be extracted from a 2-mm-diam aperture at 2 kW rf input power and 3 mTorr operation pressure.",
    Publisher = "AIP",
    ISSN = "0034-6748",
    Author = "Ximan Jiang and YeChen and Lili Ji and Qing Ji and Ka-Ngo Leung",
    }
  • J.W. McDonald, T.Schenkel, A.V. Hamza and D.H. Schneider Material dependence of total electron emission yields following slow highly charged ion impact Nuclear Instruments and Methods in Physics Research B 240 829--833 (2005) doi bibtex
    @article{ McDonald:NIMB-240-829,
    title = "Material dependence of total electron emission yields following slow highly charged ion impact",
    journal = "Nuclear Instruments and Methods in Physics Research B",
    volume = "240",
    year = "2005",
    doi = "doi:10.1016/j.nimb.2005.06.210",
    pages = "829--833",
    author = "J.W. McDonald and T.Schenkel and A.V. Hamza and D.H. Schneider",
    }
  • A.Persaud, T.Schenkel, J.Bokor, Tzv. Ivanov and I.W. Rangelow Ion implantation with scanning probe alignment Journal of Vacuum Science and Technology B 23(6) 2798--2800 (2005) pdf doi journal web page bibtex
    @article{ Persaud:JoVSTB-23-2798,
    title = "Ion implantation with scanning probe alignment",
    journal = "Journal of Vacuum Science and Technology B",
    year = "2005",
    volume = "23",
    number = "6",
    pages = "2798--2800",
    doi = "10.1116/1.2062628",
    url = "http://avspublications.org/jvstb/resource/1/jvtbd9/v23/i6/p2798_s1",
    author = "A.Persaud and T.Schenkel and J.Bokor and Tzv. Ivanov and I.W. Rangelow",
    }
  • A.Persaud, S.J. Park, J.A. Liddle, T.Schenkel and I.W. Rangelow Integration of scanning probes and ion beams Nano Letters 5(6) 1087--1091 (2005) pdf doi journal web page bibtex
    @article{ Persaud:NL-5-1087,
    title = "Integration of scanning probes and ion beams",
    year = "2005",
    journal = "Nano Letters",
    volume = "5",
    number = "6",
    pages = "1087--1091",
    doi = "10.1021/nl0506103",
    url = "http://pubs.acs.org/doi/abs/10.1021/nl0506103",
    author = "A.Persaud and S.J. Park and J.A. Liddle and T.Schenkel and I.W. Rangelow",
    }
  • T.Schenkel Semiconductor physics - Reliable performance Nature Materials 4 799--800 (2005) bibtex
    @article{ Schenkel:NM-4-799,
    title = "Semiconductor physics - Reliable performance",
    journal = "Nature Materials",
    year = "2005",
    volume = "4",
    pages = "799--800",
    author = "T.Schenkel",
    }

2004

  • J.Reijonen, K.N. Leung, R.B. Firestone, J.A. English, D.L. Perry, A.Smith, F.Gicquel, M.Sun, H.Koivunoro and T.P.Lou etal. First PGAA and NAA experimental results from a compact high intensity D-D neutron generator Nucl. Instrum. Methods A 522 598--602 (2004) bibtex
    @article{ Reijonen:NIMA-522-598,
    title = "First PGAA and NAA experimental results from a compact high intensity D-D neutron generator",
    journal = "Nucl. Instrum. Methods A",
    volume = "522",
    pages = "598--602",
    year = "2004",
    author = "J.Reijonen and K.N. Leung and R.B. Firestone and J.A. English and D.L. Perry and A.Smith and F.Gicquel and M.Sun and H.Koivunoro and T.P.Lou etal.",
    }
  • S.K. Hahto, S.T. Hahto, Q.Ji, K.N. Leung, S.Wilde, E.L. Foley, L.R. Grisham and F.M. Levinton Multicusp ion source with external rf antenna for production of protons Rev. Sci. Instrum. 75 355 (2004) journal web page bibtex
    @article{ Hahto:RSI-75-355,
    title = "Multicusp ion source with external rf antenna for production of protons",
    journal = "Rev. Sci. Instrum.",
    volume = "75",
    pages = "355",
    year = "2004",
    url = "http://link.aip.org/link/RSINAK/v75/p355/",
    author = "S.K. Hahto and S.T. Hahto and Q.Ji and K.N. Leung and S.Wilde and E.L. Foley and L.R. Grisham and F.M. Levinton",
    }
  • S.K. Hahto, S.T. Hahto, J.W. Kwan, K.N. Leung, L.R. Grisham, K.Saadatmand, V.Benveniste Negative ions for heavy ion fusion and semiconductor manufacturing applications Rev. Sci. Instrum. 75 1799 (2004) journal web page bibtex
    @article{ Hahto:RSI-75-1799,
    title = "Negative ions for heavy ion fusion and semiconductor manufacturing applications",
    journal = "Rev. Sci. Instrum.",
    volume = "75",
    pages = "1799",
    year = "2004",
    url = "http://link.aip.org/link/RSINAK/v75/p1799/",
    author = "S.K. Hahto and S.T. Hahto and J.W. Kwan and K.N. Leung and L.R. Grisham and K.Saadatmand and V.Benveniste",
    }
  • P.Grabiec, J.Radojewski, M.Zaborowski, K.Domanski, T.Schenkel and I.W. Rangelow Batch fabricated scanning near field optical microscope/atomic force microscopy microprobe integrated with piezoresistive cantilever beam with highly reproducible focused ion beam micromachined aperture Journal of Vacuum Science and Technology B 22(1) 16--21 (2004) pdf bibtex
    @article{ Grabiec:JVSTB-22-16,
    title = "Batch fabricated scanning near field optical microscope/atomic force microscopy microprobe integrated with piezoresistive cantilever beam with highly reproducible focused ion beam micromachined aperture",
    year = "2004",
    journal = "Journal of Vacuum Science and Technology B",
    volume = "22(1)",
    pages = "16--21",
    author = "P.Grabiec and J.Radojewski and M.Zaborowski and K.Domanski and T.Schenkel and I.W. Rangelow",
    }
  • Q.Ji, L.Ji, Y.Chen and KNLeung Combined electron- and ion-beam imprinter and its applications Applied Physics Letters 85(20) 4618-4620 (2004) doi bibtex
    @article{ JI:APL-85-4618,
    Title = "Combined electron- and ion-beam imprinter and its applications",
    Journal = "Applied Physics Letters",
    Year = "2004",
    Volume = "85",
    Number = "20",
    Pages = "4618-4620",
    Abstract = "A combined electron- and ion-beam system employing a double-chamber plasma source and a single accelerator column has been developed to provide focused electron and positive-ion beams simultaneously, with no need for a separate electron source or accelerating column for sample neutralization. The self-aligned ion and electron beams can be used to micromachine and image a variety of materials, both conducting and insulating. Together with an ion-beam imprinting scheme, the combined electron/ion beam system is compact and provides low-cost, high-throughput, and large-area micromachining. (C) 2004 American Institute of Physics.",
    Publisher = "AMER INST PHYSICS",
    doi = "10.1063/1.1812367",
    ISSN = "0003-6951",
    Author = "Q.Ji and L.Ji and Y.Chen and KNLeung",
    }
  • J.W. McDonald, A.V. Hamza, M.W. Newman, J.P. Holder, D.H. Schneider and T.Schenkel Surface charge compensation for a highly charged ion emission microscope Ultramicroscopy 101(2-4) 225--229 (2004) pdf bibtex
    @article{ McDonald:UM-101-225,
    title = "Surface charge compensation for a highly charged ion emission microscope",
    year = "2004",
    journal = "Ultramicroscopy",
    volume = "101(2-4)",
    pages = "225--229",
    author = "J.W. McDonald and A.V. Hamza and M.W. Newman and J.P. Holder and D.H. Schneider and T.Schenkel",
    }
  • S.J. Park, J.A. Liddle, A.Persaud, F.I. Allen, T.Schenkel and J.Bokor Formation fo 15 nm scale Coloumb blockade structures in silicon by electron beam lithography with a bilayer resist process Journal of Vacuum Science and Technology B 22(6) 3115--3118 (2004) pdf bibtex
    @article{ Park:JVSTB-22-3115,
    title = "Formation fo 15 nm scale Coloumb blockade structures in silicon by electron beam lithography with a bilayer resist process",
    year = "2004",
    journal = "Journal of Vacuum Science and Technology B",
    volume = "22(6)",
    pages = "3115--3118",
    author = "S.J. Park and J.A. Liddle and A.Persaud and F.I. Allen and T.Schenkel and J.Bokor",
    }
  • S.J. Park, A.Persaud, J.A. Liddle, J.Nilsson, J.Bokor, D.H. Schneider, I.W. Rangelow and T.Schenkel Processing issues in top-down approaches to quantum computer development in silicon Microelectronic Engineering 73--74 695--700 (2004) pdf arXiv.org bibtex
    @article{ Park:ME-73-695,
    title = "Processing issues in top-down approaches to quantum computer development in silicon",
    year = "2004",
    journal = "Microelectronic Engineering",
    volume = "73--74",
    pages = "695--700",
    eprint = "cond-mat/0310195",
    author = "S.J. Park and A.Persaud and J.A. Liddle and J.Nilsson and J.Bokor and D.H. Schneider and I.W. Rangelow and T.Schenkel",
    }
  • A.Persaud, F.Allen, F.Gicquel, S.J. Park, J.A. Liddle, T.Schenkel, Tzv. Ivanov, K.Ivanova, I.W. Rangelow and J.Bokor Single ion implantation with scanning probe alignment Journal of Vacuum Science and Technology B 22(6) 2992--2994 (2004) pdf bibtex
    @article{ Persaud:JVSTB-22-2992,
    title = "Single ion implantation with scanning probe alignment",
    year = "2004",
    journal = "Journal of Vacuum Science and Technology B",
    volume = "22",
    number = "6",
    pages = "2992--2994",
    author = "A.Persaud and F.Allen and F.Gicquel and S.J. Park and J.A. Liddle and T.Schenkel and Tzv. Ivanov and K.Ivanova and I.W. Rangelow and J.Bokor",
    }
  • A.Persaud, S.J. Park, J.A. Liddle, I.W. Rangelow, J.Bokor, R.Keller, F.I. Allen, D.H. Schneider and T.Schenkel Quantum Computer Development with Single Ion Implantation Quantum Information Processing 3 233--245 (2004) pdf bibtex
    @article{ Persaud:QIP-3-233,
    title = "Quantum Computer Development with Single Ion Implantation",
    year = "2004",
    journal = "Quantum Information Processing",
    volume = "3",
    pages = "233--245",
    author = "A.Persaud and S.J. Park and J.A. Liddle and I.W. Rangelow and J.Bokor and R.Keller and F.I. Allen and D.H. Schneider and T.Schenkel",
    }
  • T.Schenkel, I.W. Rangelow, R.Keller, S.J. Park, J.Nilsson, A.Persaud, V.R. Radmilovic, P.Grabiec, D.H. Schneider, J.A. Liddle and J.Bokor Open questions in electronic sputtering of solids by slow highly charged ions with respect to applications in single ion implantation Nuclear Instruments and Methods in Physics Research B 219--220 200--205 (2004) pdf bibtex
    @article{ Schenkel:NIMB-219-200,
    title = "Open questions in electronic sputtering of solids by slow highly charged ions with respect to applications in single ion implantation",
    year = "2004",
    journal = "Nuclear Instruments and Methods in Physics Research B",
    volume = "219--220",
    pages = "200--205",
    author = "T.Schenkel and I.W. Rangelow and R.Keller and S.J. Park and J.Nilsson and A.Persaud and V.R. Radmilovic and P.Grabiec and D.H. Schneider and J.A. Liddle and J.Bokor",
    }
  • T.-C. Shen, J.S. Kline, T.Schenkel, S.J. Robinson, J.-Y. Ji, C.Yang, R.-R. Du and J.R. Tucker Nanoscale electronics based on two-dimensional dopant patterns in sislicon Journal of Vacuum Science and Technology B 22(6) 3182--3185 (2004) pdf bibtex
    @article{ Shen:JVSTB-22-3182,
    title = "Nanoscale electronics based on two-dimensional dopant patterns in sislicon",
    year = "2004",
    journal = "Journal of Vacuum Science and Technology B",
    volume = "22(6)",
    pages = "3182--3185",
    author = "T.-C. Shen and J.S. Kline and T.Schenkel and S.J. Robinson and J.-Y. Ji and C.Yang and R.-R. Du and J.R. Tucker",
    }

2003

  • J.Reijonen, M.Eardley, R.Gough, K.N. Leung and R.Thomae Microwave ion source for low charge state ion production Nucl. Instrum. Methods A 511 301--310 (2003) bibtex
    @article{ Reijonen:NIMA-511-301,
    title = "Microwave ion source for low charge state ion production",
    journal = "Nucl. Instrum. Methods A",
    volume = "511",
    pages = "301--310",
    year = "2003",
    author = "J.Reijonen and M.Eardley and R.Gough and K.N. Leung and R.Thomae",
    }
  • S.K. Hahto, S.T. Hahto, J.W. Kwan, K.N. Leung and L.R. Grisham Negative chlorine ions from multicusp radio frequency ion source for heavy ion fusion applications Rev. Sci. Instrum. 74 2987 (2003) journal web page bibtex
    @article{ Hahto:RSI-74-2987,
    title = "Negative chlorine ions from multicusp radio frequency ion source for heavy ion fusion applications",
    journal = "Rev. Sci. Instrum.",
    volume = "74",
    pages = "2987",
    year = "2003",
    url = "http://link.aip.org/link/RSINAK/v74/p2987/",
    author = "S.K. Hahto and S.T. Hahto and J.W. Kwan and K.N. Leung and L.R. Grisham",
    }
  • T.Schenkel and K.J. Wu Probing nano-environments of peptide molecules on solid surfaces by highly charged ion secondary ion mass spectrometry International Journal of Mass Spectroscopy 229 47--53 (2003) pdf bibtex
    @article{ Schenkel:IJoMS-229-47,
    title = "Probing nano-environments of peptide molecules on solid surfaces by highly charged ion secondary ion mass spectrometry",
    year = "2003",
    journal = "International Journal of Mass Spectroscopy",
    volume = "229",
    pages = "47--53",
    author = "T.Schenkel and K.J. Wu",
    }
  • T.Schenkel, A.Persaud, S.J. Park, J.Nilsson, J.Bokor, J.A. Liddle, R.Keller, D.H. Schneider, D.W. Cheng and D.E. Humphries Solid state quantum computer development in silicon with single ion implantation Journal of Applied Physics 94(11) 7017--7024 (2003) bibtex
    @article{ Schenkel:JAP-94-7017,
    title = "Solid state quantum computer development in silicon with single ion implantation",
    year = "2003",
    journal = "Journal of Applied Physics",
    volume = "94",
    number = "11",
    pages = "7017--7024",
    author = "T.Schenkel and A.Persaud and S.J. Park and J.Nilsson and J.Bokor and J.A. Liddle and R.Keller and D.H. Schneider and D.W. Cheng and D.E. Humphries",
    }
  • T.Schenkel, V.Radmilovic, E.A. Stach, S.J. Park and A.Persaud Formation of a few nanometer wide holes in membranes with a dual beam focused ion beam system Journal of Vacuum Science and Technology B 21(6) 2720--2723 (2003) pdf bibtex
    @article{ Schenkel:JVSTB-21-2720,
    title = "Formation of a few nanometer wide holes in membranes with a dual beam focused ion beam system",
    year = "2003",
    journal = "Journal of Vacuum Science and Technology B",
    volume = "21(6)",
    pages = "2720--2723",
    author = "T.Schenkel and V.Radmilovic and E.A. Stach and S.J. Park and A.Persaud",
    }

2002

  • Q.Ji, T.-J. King, K.-N. Leung and S.B. Wilde Production of various species of focused ion beam Rev. Sci. Instrum. 73 822 (2002) pdf doi journal web page bibtex
    @article{ Ji:RSI-73-822,
    title = "Production of various species of focused ion beam",
    journal = "Rev. Sci. Instrum.",
    volume = "73",
    pages = "822",
    year = "2002",
    url = "http://link.aip.org/link/RSINAK/v73/p822/",
    doi = "10.1063/1.1427351",
    author = "Q.Ji and T.-J. King and K.-N. Leung and S.B. Wilde",
    }
  • J.Reijonen, K.N. Leung and G.Jones RF ion source development for neutron generation and for material modification Rev. Sci. Instrum. 73 934 (2002) doi journal web page bibtex
    @article{ Reijonen:RSI-73-934,
    title = "RF ion source development for neutron generation and for material modification",
    journal = "Rev. Sci. Instrum.",
    volume = "73",
    pages = "934",
    year = "2002",
    doi = "10.1063/1.1430519",
    url = "http://link.aip.org/link/RSINAK/v73/p934/",
    author = "J.Reijonen and K.N. Leung and G.Jones",
    }
  • S.Hahto, K.Leung, A.Persaud and J.Reijonen A multiaperture electron filter for volume-type H- ion source Rev. Sci. Instrum. 73 967 (2002) doi journal web page bibtex
    @article{ Hahto:RSI-73-967,
    title = "A multiaperture electron filter for volume-type H- ion source",
    journal = "Rev. Sci. Instrum.",
    volume = "73",
    pages = "967",
    year = "2002",
    doi = "10.1063/1.1431409",
    url = "http://link.aip.org/link/RSINAK/v73/p967/",
    author = "S.Hahto and K.Leung and A.Persaud and J.Reijonen",
    }
  • S.Hahto, K.N. Leung, A.Persaud and J.Reijonen A multiaperture electron filter for volume type H$^-$ ion source Review of Scientific Instruments 73(2) 967--969 (2002) bibtex
    @article{ Hahto:RoSI-73-967,
    title = "A multiaperture electron filter for volume type H$^-$ ion source",
    year = "2002",
    journal = "Review of Scientific Instruments",
    volume = "73",
    number = "2",
    pages = "967--969",
    author = "S.Hahto and K.N. Leung and A.Persaud and J.Reijonen",
    }
  • G.A. Machicoane, T.Schenkel, T.R. Niedermayr, M.W. Newmann, A.V. Hamza, A.V. Barnes, J.W. McDonald, J.A. Tanis and D.H. Schneider Internal dielectronic excitation in highly charged ions colliding with surfaces Physical Review A 65 042903 (2002) pdf doi journal web page bibtex
    @article{ Machicoane:PRA-65-042903,
    title = "Internal dielectronic excitation in highly charged ions colliding with surfaces",
    year = "2002",
    journal = "Physical Review A",
    volume = "65",
    pages = "042903",
    url = "http://link.aps.org/doi/10.1103/PhysRevA.65.042903",
    doi = "10.1103/PhysRevA.65.042903",
    author = "G.A. Machicoane and T.Schenkel and T.R. Niedermayr and M.W. Newmann and A.V. Hamza and A.V. Barnes and J.W. McDonald and J.A. Tanis and D.H. Schneider",
    }
  • J.W. McDonald, R.W. Bauer and D.H. Schneider Extraction of highly charged ions (up to 90+) from a high-energy electron-beam ion trap Review of Scientific Instruments 73 30-35 (2002) pdf bibtex
    @article{ McDonald2002_RoSI,
    title = "Extraction of highly charged ions (up to 90+) from a high-energy electron-beam ion trap",
    year = "2002",
    journal = "Review of Scientific Instruments",
    volume = "73",
    pages = "30-35",
    author = "J.W. McDonald and R.W. Bauer and D.H. Schneider",
    }
  • J.Reijonen, Q.Ji, T.J. King, K.N. Leung, A.Persaud and S.Wilde Compact focusing system for ions and electron beams Journal of Vacuum Science and Technology B 20(1) 180--184 (2002) bibtex
    @article{ Reijonen:JVSTB-20-180,
    title = "Compact focusing system for ions and electron beams",
    year = "2002",
    journal = "Journal of Vacuum Science and Technology B",
    volume = "20",
    number = "1",
    pages = "180--184",
    author = "J.Reijonen and Q.Ji and T.J. King and K.N. Leung and A.Persaud and S.Wilde",
    }
  • T.Schenkel, A.V. Hamza, J.P. Holder, K.Krämer, J.W. McDonald, A.Persaud and D.H. Schneider Extraction of highly charged ions from the electron beam ion trap at LBNL for applications in surface analysis and materials science Review of Scientific Instruments 73 663-666 (2002) pdf bibtex
    @article{ Schenkel2002_RoSI,
    title = "Extraction of highly charged ions from the electron beam ion trap at LBNL for applications in surface analysis and materials science",
    year = "2002",
    journal = "Review of Scientific Instruments",
    volume = "73",
    pages = "663-666",
    author = "T.Schenkel and A.V. Hamza and J.P. Holder and K.Krämer and J.W. McDonald and A.Persaud and D.H. Schneider",
    }
  • T.Schenkel, J.P. Holder, J.W. McDonald, J.Meijer, A.Persaud and D.H. Schneider Single Ion Implantation for Solid State Quantum Computer Development in SPIE V4656 (2002) pdf arXiv.org bibtex
    @inproceedings{ Schenkel2002_SPIE,
    title = "Single Ion Implantation for Solid State Quantum Computer Development",
    year = "2002",
    booktitle = "SPIE V4656",
    address = "San Jose",
    organization = "SPIE",
    eprint = "cond-mat/0201549",
    author = "T.Schenkel and J.P. Holder and J.W. McDonald and J.Meijer and A.Persaud and D.H. Schneider",
    }
  • T.Schenkel, A.Persaud, S.J. Park, J.Meijer, J.R. Kinglsey, J.W. McDonald, J.P. Holder, J.Bokor and D.H. Schneider Single Ion Implantation for Solid State Quantum Computer Development Journal of Vacuum Science and Technology B 20(6) 2819--2823 (2002) pdf arXiv.org bibtex
    @article{ Schenkel:JVSTB-20-2816,
    title = "Single Ion Implantation for Solid State Quantum Computer Development",
    year = "2002",
    journal = "Journal of Vacuum Science and Technology B",
    volume = "20",
    number = "6",
    pages = "2819--2823",
    eprint = "cond-mat/0201549",
    author = "T.Schenkel and A.Persaud and S.J. Park and J.Meijer and J.R. Kinglsey and J.W. McDonald and J.P. Holder and J.Bokor and D.H. Schneider",
    }
  • T.Schenkel, J.Reijonen, A.Persaud, A.Krämer, K.N. Leung, R.A. Gough, W.A. Barletta and E.A. Blakely A focused heavy-ion beam system for high-LET studies of cells Radiation Research 158(3) 368 (2002) pdf journal web page bibtex
    @article{ Schenkel:RR-158-368,
    title = "A focused heavy-ion beam system for high-LET studies of cells",
    year = "2002",
    journal = "Radiation Research",
    volume = "158",
    number = "3",
    pages = "368",
    url = "http://www.rrjournal.org/doi/abs/10.1667/0033-7587%282002%29158%5B0365%3APOTIWM%5D2.0.CO%3B2",
    author = "T.Schenkel and J.Reijonen and A.Persaud and A.Krämer and K.N. Leung and R.A. Gough and W.A. Barletta and E.A. Blakely",
    }

2001

  • A.V. Hamza, M.W. Newman, P.A. Thielen, H.W.H. Lee, T.Schenkel, J.W. McDonald and D.H. Schneider Light-emitting nanostructers formed by intense, ultrafast electronic excitation in silicon (100) Applied Physics Letters 79 2973-2975 (2001) pdf bibtex
    @article{ Hamza2002_APL,
    title = "Light-emitting nanostructers formed by intense, ultrafast electronic excitation in silicon (100)",
    year = "2001",
    journal = "Applied Physics Letters",
    volume = "79",
    pages = "2973-2975",
    author = "A.V. Hamza and M.W. Newman and P.A. Thielen and H.W.H. Lee and T.Schenkel and J.W. McDonald and D.H. Schneider",
    }
  • A.Persaud, K.-N. Leung and J.Reijonen Compact Electron Beam Focusing Column in SPIE's 46th Annual Meeting International Symposium on Optical Science and Technology 4510 88--95 (2001) bibtex
    @inproceedings{ Persaud:SPIE01,
    title = "Compact Electron Beam Focusing Column",
    booktitle = "SPIE's 46th Annual Meeting International Symposium on Optical Science and Technology",
    address = "San Diego",
    volume = "4510",
    pages = "88--95",
    year = "2001",
    author = "A.Persaud and K.-N. Leung and J.Reijonen",
    }
  • T.Schenkel, A.V. Hamza, M.W. Newman, G.Machicoane, J.W. McDonald, D.H. Schneider, K.J. Wu and V.Kh. Lichtenstein Transport of Hollow Atoms Through Thin Dielectric Films Physica Scripta T92 208-210 (2001) pdf bibtex
    @article{ Schenkel2001_PhysScr,
    title = "Transport of Hollow Atoms Through Thin Dielectric Films",
    year = "2001",
    journal = "Physica Scripta",
    volume = "T92",
    pages = "208-210",
    author = "T.Schenkel and A.V. Hamza and M.W. Newman and G.Machicoane and J.W. McDonald and D.H. Schneider and K.J. Wu and V.Kh. Lichtenstein",
    }
  • T.Schenkel, A.Krämer, K.-N. Leung, A.V. Hamza, J.W. McDonald and D.H. Schneider Highly Charged Ion -- Secondary Ion Mass Spectrometry (HCI--SIMS): Towards Metrology Solutions for sub 100 nm Technology Nodes in SPIE V4468 (2001) pdf bibtex
    @inproceedings{ Schenkel2001_SPIE,
    title = "Highly Charged Ion -- Secondary Ion Mass Spectrometry (HCI--SIMS): Towards Metrology Solutions for sub 100 nm Technology Nodes",
    year = "2001",
    booktitle = "SPIE V4468",
    author = "T.Schenkel and A.Krämer and K.-N. Leung and A.V. Hamza and J.W. McDonald and D.H. Schneider",
    }

2000

  • Y.Lee, Q.Ji, K.N. Leung and N.Zahir Nanobeam production with the multicusp ion source Rev. Sci. Instrum. 71 722 (2000) doi journal web page bibtex
    @article{ Lee:RSI-71-727,
    title = "Nanobeam production with the multicusp ion source",
    journal = "Rev. Sci. Instrum.",
    volume = "71",
    pages = "722",
    year = "2000",
    doi = "10.1063/1.1150273",
    url = "http://link.aip.org/link/RSINAK/v71/p722/",
    author = "Y.Lee and Q.Ji and K.N. Leung and N.Zahir",
    }
  • J.Reijonen, M.Eardley, R.Gough, R.Keller, K.Leung, R.Thomae, D.Pickard and M.D. Williams Improvement of the lifetime of radio frequency antenna for plasma generation Rev. Sci. Instrum. 71 1134 (2000) pdf doi journal web page bibtex
    @article{ Reijonen:RSI-71-1134,
    title = "Improvement of the lifetime of radio frequency antenna for plasma generation",
    journal = "Rev. Sci. Instrum.",
    volume = "71",
    pages = "1134",
    year = "2000",
    doi = "10.1063/1.1150407",
    url = "http://link.aip.org/link/RSINAK/v71/p1134/",
    author = "J.Reijonen and M.Eardley and R.Gough and R.Keller and K.Leung and R.Thomae and D.Pickard and M.D. Williams",
    }