Selected Publications

2021

  • Q. Ji, K. K. Afridi, T. Bauer, G. Giesbrecht, Y. Hou, A. Lal, D. Ni, A. Persaud, Z. Qin, P. Seidl, S. Sinha, T. Schenkel, Beam power scale-up in micro-electromechanical systems based multi-beam ion accelerators. Rev. Sci. Instrum. 92, 103301 (2021), http://dx.doi.org/10.1063/5.0058175

  • R. Sanghvi, D. Ni, V. Gund, Q. Ji, T. Schenkel, K. K. Afridi, A. Lal, E. Petro, in AIAA Propulsion and Energy 2021 Forum (American Institute of Aeronautics and Astronautics, 2021; https://doi.org/10.2514/6.2021-3246), AIAA Propulsion and Energy Forum.

  • A. Unzueta Mauricio, B. Ludewigt, B. Mak, T. Tak, A. Persaud, An all-digital associated particle imaging system for the 3D determination of isotopic distributions. Rev. Sci. Instrum. 92, 063305 (2021).

  • J. Meijer, T. Schenkel, I. W. Rangelow, in Novel Patterning Technologies 2021 (International Society for Optics and Photonics, 2021; https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11610/116101A/Single-dopant-atom-lithography-for-the-fabrication-of-quantum-computers/10.1117/12.2584612.short), vol. 11610, p. 116101A.

2020

  • S. Sinha, Y. Hou, D. Ni, Q. Ji, A. Persaud, P. Seidl, T. Schenkel, A. Lal, K. K. Afridi, in 2020 IEEE Energy Conversion Congress and Exposition (ECCE) (ieeexplore.ieee.org, 2020; http://dx.doi.org/10.1109/ECCE44975.2020.9236008), pp. 5452–5457.

  • Y. Hou, S. Sinha, D. Ni, Q. Ji, A. Persaud, P. Seidl, T. Schenkel, A. Lal, K. K. Afridi, in 2020 IEEE Energy Conversion Congress and Exposition (ECCE) (2020; http://dx.doi.org/10.1109/ECCE44975.2020.9236076), pp. 5458–5463.

  • S. Sinha, D. Ni, Q. Ji, A. Persaud, P. Seidl, Multi-MHz Multi-kV Power Amplifier for Compact Particle Accelerators. 2020 IEEE Applied (2020), doi:10.1109/APEC39645.2020.9124169.

2019

  • M. Ayllon Unzueta, T. Tak, A. Rosenstrom, E. Brodie, C. Brown, C. Castanha, C. Gary, C. Hicks Pries, W. Larsen, B. Ludewigt, A. Persaud, Repeatable, non-destructive, spatially resolved measurements of carbon-in-soil. Soil Science (2019), , doi:10.1002/essoar.10501311.1.

  • M. A. Unzueta, W. Mixter, Z. Croft, J. Joseph, B. Ludewigt, A. Persaud, Position sensitive alpha detector for an associated particle imaging system. arXiv [physics.ins-det] (2019), p. 050005.

  • M. A. Unzueta, E. Brodie, C. Brown, C. Castanha, C. Gary, C. H. Pries, W. Larsen, B. Ludewigt, A. Rosenstrom, A. Persaud, in Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXI, R. B. James, A. Burger, S. A. Payne, Eds. (International Society for Optics and Photonics, 2019; https://doi.org/10.1117/12.2530704), vol. 11114, pp. 197–202.

  • K. B. Vinayakumar, S. Ardanuc, Q. Ji, A. Persaud, P. Seidl, T. Schenkel, A. Lal, Demonstration of waferscale voltage amplifier and electrostatic quadrupole focusing array for compact linear accelerators. J. Appl. Phys. 125, 194901 (2019).

2018

  • P. A. Seidl, A. Persaud, D. Di Domenico, J. Andreasson, Q. Ji, W. Liang, D. Ni, D. Oberson, L. Raymond, G. Scharfstein, A. M. M. Todd, A. Lal, T. Schenkel, in 2018 22nd International Conference on Ion Implantation Technology (IIT) (2018; http://dx.doi.org/10.1109/IIT.2018.8807975), pp. 184–187.

  • P. A. Seidl, A. Persaud, W. Ghiorso, Q. Ji, W. L. Waldron, A. Lal, K. B. Vinayakumar, T. Schenkel, Source-to-accelerator quadrupole matching section for a compact linear accelerator. Rev. Sci. Instrum. 89, 053302 (2018).

  • A. D. Stepanov, J. J. Barnard, A. Friedman, E. P. Gilson, D. P. Grote, Q. Ji, I. D. Kaganovich, A. Persaud, P. A. Seidl, T. Schenkel, Optimizing beam transport in rapidly compressing beams on the neutralized drift compression experiment – II. Matter and Radiation at Extremes. 3, 78–84 (2018).

  • K. B. Vinayakumar, A. Persaud, Q. Ji, P. Seidl, T. Schenkel, A. Lal, in 2018 IEEE Micro Electro Mechanical Systems (MEMS) (2018; http://dx.doi.org/10.1109/MEMSYS.2018.8346681), pp. 820–823.

2017

  • A. Persaud, Q. Ji, E. Feinberg, P. A. Seidl, W. L. Waldron, T. Schenkel, A. Lal, K. B. Vinayakumar, S. Ardanuc, D. A. Hammer, A compact linear accelerator based on a scalable microelectromechanical-system RF-structure. Rev. Sci. Instrum. 88, 063304 (2017).

  • P. A. Seidl, J. J. Barnard, E. Feinberg, A. Friedman, E. P. Gilson, D. P. Grote, Q. Ji, I. D. Kaganovich, B. Ludewigt, A. Persaud, C. Sierra, M. Silverman, A. D. Stepanov, A. Sulyman, F. Treffert, W. L. Waldron, M. Zimmer, T. Schenkel, Irradiation of materials with short, intense ion pulses at NDCX-II. Laser Part. Beams. 35, 373–378 (2017).

  • B. A. Ludewigt, P. A. Seidl, A. Persaud, Q. Ji, S. Steinke, S. S. Bulanov, K. Nakamura, W. P. Leemans, T. Schenkel, E. S. Bielejec, A. Friedman, J. J. Barnard, Short Intense Ion Pulses for Radiation Effects Research Using NDCX-II and BELLA-i. HEART 2017 conference (2017).

  • R. E. Lake, A. Mueller, H. Pan, A. Persaud, B. A. Ludewigt, V. Z. Kresin, A. M. Minor, P. A. Seidl, T. Schenkel, Patterned Electron Beam Exposures of YBCO – Towards Local Control of Doping. Phys. Procedia. 90, 381–384 (2017).

  • A. Persaud, P. A. Seidl, Q. Ji, E. Feinberg, W. L. Waldron, T. Schenkel, S. Ardanuc, K. B. Vinayakumar, A. Lal, Staging of RF-accelerating Units in a MEMS-based Ion Accelerator. Phys. Procedia. 90, 136–142 (2017).

2016-2010

  • 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, M. Zimmer, Recent Experiments At Ndcx-II: Irradiation Of Materials Using Short, Intense Ion Beams. arXiv [physics.acc-ph] (2016), (available at http://arxiv.org/abs/1610.05253).

  • A. Persaud, M. J. Regis, M. W. Stettler, V. K. Vytla, Control Infrastructure for a Pulsed Ion Accelerator. IEEE Trans. Nucl. Sci. 63, 2677–2681 (2016).

  • 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, T. Schenkel, Short-pulse, compressed ion beams at the Neutralized Drift Compression Experiment. J. Phys. Conf. Ser. 717, 012079 (2016).

  • 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, T. Schenkel, in High Energy Density generated by Heavy Ion and Laser Beams, HEDgeHOB Collaboration at FAIR - Report 2014/2015 (GSI, 2016; https://indico.gsi.de/getFile.py/access?resId=0&materialId=17&confId=3206).

  • Q. Ji, P. A. Seidl, W. L. Waldron, J. H. Takakuwa, A. Friedman, D. P. Grote, A. Persaud, J. J. Barnard, T. Schenkel, Development and testing of a pulsed helium ion source for probing materials and warm dense matter studies. Rev. Sci. Instrum. 87, 02B707 (2016).

  • T. Schenkel, C. D. Weis, C. C. Lo, A. Persaud, I. Chakarov, D. H. Schneider, J. Bokor, Deterministic doping and the exploration of spin qubits. AIP Conf. Proc. 1640, 124–128 (2015).

  • A. Persaud, J. J. Barnard, H. Guo, P. Hosemann, S. Lidia, A. M. Minor, P. A. Seidl, T. Schenkel, Accessing Defect Dynamics using Intense, Nanosecond Pulsed Ion Beams. Phys. Procedia. 66, 604–609 (2015).

  • H. Guo, A. Persaud, S. Lidia, A. M. Minor, P. Hosemann, P. A. Seidl, T. Schenkel, Dynamic investigation of defects induced by short, high current pulses of high energy lithium ions. MRS Online Proceedings Library Archive. 1712 (2014), doi:10.1557/opl.2014.856.

  • A. Persaud, Analysis of slope-intercept plots for arrays of electron field emitters. J. Appl. Phys. 114, 154301 (2013).

  • O. Waldmann, A. Persaud, R. Kapadia, K. Takei, F. I. Allen, A. Javey, T. Schenkel, Effects of palladium coating on field-emission properties of carbon nanofibers in a hydrogen plasma. Thin Solid Films. 534, 488–491 (2013).

  • C. D. Weis, T. Schenkel, Solid-state physics: Single spins in silicon see the light. Nature. 497, 46–47 (2013).

  • A. Sy, Q. Ji, A. Persaud, B. A. Ludewigt, T. Schenkel, Ion source and beam guiding studies for an API neutron generator. AIP Conf. Proc. 1525, 123–127 (2013).

  • A. Persaud, O. Waldmann, R. Kapadia, K. Takei, A. Javey, T. Schenkel, A compact neutron generator using a field ionization source. Rev. Sci. Instrum. 83, 02B312 (2012).

  • A. Sy, Q. Ji, A. Persaud, O. Waldmann, T. Schenkel, Novel methods for improvement of a Penning ion source for neutron generator applications. Rev. Sci. Instrum. 83, 02B309 (2012).

  • 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, T. Schenkel, Electrical activation and electron spin resonance measurements of implanted bismuth in isotopically enriched silicon-28. Appl. Phys. Lett. 100, 172104 (2012).

  • C. C. Lo, F. R. Bradbury, A. M. Tyryshkin, C. D. Weis, J. Bokor, T. Schenkel, S. A. Lyon, Suppression of microwave rectification effects in electrically detected magnetic resonance measurements. Appl. Phys. Lett. 100, 063510 (2012).

  • B. A. Ludewigt, B. J. Quiter, S. D. Ambers, “Nuclear Resonance Fluorescence for Safeguards Applications” (2011), , doi:10.2172/1022713.

  • B. J. Quiter, B. A. Ludewigt, V. V. Mozin, S. G. Prussin, Nuclear Resonance Fluorescence for Materials Assay. IEEE Trans. Nucl. Sci. 58, 400–403 (2011).

  • O. Waldmann, B. Ludewigt, Development of a Permanent-Magnet Microwave Ion Source for a Sealed-Tube Neutron Generator. Rev. Sci. Instrum. 82, 113505 (2011).

  • B. J. Quiter, B. A. Ludewigt, V. V. Mozin, C. Wilson, S. Korbly, Transmission Nuclear Resonance Fluorescence Measurement of 238 U. Nucl. Instrum. Methods Phys. Res. B (2011), doi:10.1016/j.nimb.2011.02.081.

  • B. A. Ludewigt, B. J. Quiter, S. D. Ambers, “Nuclear Resonance Fluorescence to Measure Plutonium Mass in Spent Nuclear Fuel” (2010), , doi:10.2172/1015332.

  • A. Persaud, I. Allen, M. R. Dickinson, R. Kapadia, K. Takei, A. Javey, T. Schenkel, Development of a Compact Neutron Source based on Field Ionization Processes. J. Vac. Sci. Technol. B Nanotechnol. Microelectron., 4 (2010).

  • D. M. Toyli, C. D. Weis, G. D. Fuchs, T. Schenkel, D. D. Awschalom, Chip-scale nanofabrication of single spins and spin arrays in diamond. Nano Lett. 10, 3168–3172 (2010).

  • A. Persaud, J. W. Kwan, M. Leitner, K.-N. Leung, B. Ludewigt, N. Tanaka, W. Waldron, S. Wilde, A. J. Antolak, D. H. Morse, T. Raber, A tandem-based compact dual-energy gamma generator. Rev. Sci. Instrum. 81, 02B904 (2010).

  • Q. Ji, A. Sy, J. W. Kwan, Radio frequency-driven proton source with a back-streaming electron dump. Rev. Sci. Instrum. 81, 02B312 (2010).

  • L. J. Bond, J. W. Griffin, K. M. Denslow, R. V. Harris, T. Schenkel, A. Persaud, G. E. Dale, A. Sood, J. T. Rutledge, S. Kovaleski, F. Keel, Nuclear Source Replacement in Petrochemical Well-Logging. SEG Expanded Abstracts. 29, 518–522 (2010).

  • G. D. Fuchs, V. V. Dobrovitski, D. M. Toyli, F. J. Heremans, C. D. Weis, T. Schenkel, D. D. Awschalom, Excited-state spin coherence of a single nitrogen-vacancy centre in diamond. Nat. Phys. 6, 668–672 (2010).

pre 2010

  • C. C. Lo, A. Persaud, S. Dhuey, D. Olynick, F. Borondics, M. C. Martin, H. A. Bechtel, J. Bokor, T. Schenkel, Device fabrication and transport measurements of FinFETs built with 28 Si SOI wafers toward donor qubits in silicon. Semicond. Sci. Technol. 24, 105022 (2009).

  • Q. Ji, Y. Wu, M. Regis, J. W. Kwan, Initial testing of a compact portable microwave-driven neutron generator. IEEE Trans. Nucl. Sci. 56, 1312–1315 (2009).

  • M. J. King, G. T. Miller, J. Reijonen, Q. Ji, N. Andresen, F. Gicquel, T. Kalvas, K.-N. Leung, J. W. Kwan, Initial Evaluation of a Pulsed White Spectrum Neutron Generator for Explosive Detection. IEEE Trans. Nucl. Sci. 56, 1283–1287 (2009).

  • Q. Ji, J. Kwan, M. Regis, Y. Wu, S. B. Wilde, J. Wallig, in AIP Conference Proceedings (AIP, USA, 2009; https://aip.scitation.org/doi/abs/10.1063/1.3120124), vol. 1099, pp. 660–665.

  • 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” (2009), (available at https://escholarship.org/uc/item/85q0s7vv#main).

  • M. Sarovar, K. Young, T. Schenkel, K. Birgitta Whaley, Quantum nondemolition measurements of single donor spins in semiconductors. Phys. Rev. B: Condens. Matter Mater. Phys. 78, 1–7 (2008).

  • 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, S. A. Lyon, Solid-state quantum memory using the 31P nuclear spin. Nature. 455, 1085–1088 (2008).

  • G. D. Fuchs, V. V. Dobrovitski, R. Hanson, A. Batra, C. D. Weis, T. Schenkel, D. D. Awschalom, Excited-state spectroscopy using single spin manipulation in diamond. Phys. Rev. Lett. 101, 117601 (2008).

  • S. J. Robinson, C. L. Perkins, T.-C. Shen, J. R. Tucker, T. Schenkel, X. W. Wang, T. P. Ma, Low-temperature charge transport in Ga-acceptor nanowires implanted by focused-ion beams. Appl. Phys. Lett. 91, 122105 (2007).

  • G. Chai, H. Heinrich, L. Chow, T. Schenkel, Electron transport through single carbon nanotubes. Appl. Phys. Lett. 91, 103101 (2007).

  • W. J. MoberlyChan, D. P. Adams, M. J. Aziz, G. Hobler, T. Schenkel, Fundamentals of Focused Ion Beam Nanostructural Processing: Below, At, and Above the Surface. MRS Bull. 32, 424–432 (2007).

  • A. Batra, C. D. Weis, J. Reijonen, A. Persaud, T. Schenkel, S. Cabrini, C. C. Lo, J. Bokor, Detection of low energy single ion impacts in micron scale transistors at room temperature. Appl. Phys. Lett. 91, 193502 (2007).

  • L. Ji, J.-K. Kim, Q. Ji, K.-N. Leung, Y. Chen, R. A. Gough, Conformal metal thin-film coatings in high-aspect-ratio trenches using a self-sputtered rf-driven plasma source. J. Vac. Sci. Technol. B Microelectron. Nanometer Struct. Process. Meas. Phenom. 25, 1227–1230 (2007).

  • C. C. Lo, J. Bokor, T. Schenkel, A. M. Tyryshkin, S. A. Lyon, Spin-Dependent Scattering off Neutral Antimony Donors in 28Si Field-Effect Transistors. Appl. Phys. Lett. 91, 242106 (2007).

  • F. Bradbury, A. Tyryshkin, G. Sabouret, J. Bokor, T. Schenkel, S. A. Lyon, Stark Tuning of Donor Electron Spins in Silicon. Phys. Rev. Lett. 97, 10 (2006).

  • Q. Ji, Y. Chen, L. Ji, X. Jiang, K. Leung, Ion beam imprinting system for nanofabrication. Microelectron. Eng. 83, 796–799 (2006).

  • F. Allen, A. Persaud, S. Park, A. Minor, M. Sakurai, D. H. Schneider, T. Schenkel, Transport of multiply and highly charged ions through nanoscale apertures in silicon nitride membranes. Nucl. Instrum. Methods Phys. Res. B. 244, 323–326 (2006).

  • A. Persaud, K. Ivanova, Y. Sarov, T. 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. J. Vac. Sci. Technol. B Nanotechnol. Microelectron. 24, 3148–3151 (2006).

  • 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, R. de Sousa, Strategies for integration of donor electron spin qubits. Microelectron. Eng. 83, 1814–1817 (2006).

  • T. Schenkel, A. M. Tyryshkin, R. de Sousa, K. B. Whaley, J. Bokor, J. A. Liddle, A. Persaud, J. Shangkuan, I. Chakarov, S. A. Lyon, Electrical activation and spin coherence of ultra low dose antimony implants in silicon. Appl. Phys. Lett. 88, 112101 (2006).

  • L. Ji, Q. Ji, K.-N. Leung, R. A. Gough, Combined electron and focused ion beam system for improvement of secondary ion yield in secondary ion mass spectrometry instrument. Appl. Phys. Lett. 89 (2006), doi:10.1063/1.2362996.

  • J. Qing, K. N. Leung, T. J. King, X. M. Jiang, B. R. Appleton, 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, 335–340 (2005).

  • J. Reijonen, F. Gicquel, S. K. Hahto, M. King, T.-P. Lou, K.-N. Leung, D-D neutron generator development at LBNL. Appl. Radiat. Isot. 63, 757–763 (2005).

  • A. Persaud, S. J. Park, J. A. Liddle, T. Schenkel, J. Bokor, I. W. Rangelow, Integration of scanning probes and ion beams. Nano Lett. 5, 1087–1091 (2005).

  • M. Ilg, C. D. Weis, J. Schwartz, A. Persaud, Q. Ji, C. C. Lo, J. Bokor, A. Hegyi, E. Guliyev, I. W. Rangelow, T. Schenkel, Improved single ion implantation with scanning probe alignment. J. Vac. Sci. Technol. B Microelectron. Nanometer Struct. Process. Meas. Phenom. 23, 2798–2800 (2005).

  • S. K. Hahto, S. T. Hahto, K. N. Leung, J. Reijonen, T. G. Miller, P. K. Van Staagen, Fast ion beam chopping system for neutron generators. Rev. Sci. Instrum. 76, 023304 (2005).

  • X. Jiang, Y. Chen, L. Ji, Q. Ji, K.-N. 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).

  • J. W. McDonald, T. Schenkel, A. V. Hamza, D. H. Schneider, Material dependence of total electron emission yields following slow highly charged ion impact. Nucl. Instrum. Methods Phys. Res. B. 240, 829–833 (2005).

  • J. W. McDonald, A. V. Hamza, M. W. Newman, J. P. Holder, D. H. G. Schneider, T. Schenkel, Surface charge compensation for a highly charged ion emission microscope. Ultramicroscopy. 101, 225–229 (2004).

  • F. I. Allen, S.-J. Park, J. A. Liddle, I. W. Rangelow, J. Bokor, R. Keller, D. H. Schneider, T. Schenkel, A. Persaud, Quantum Computer Development with Single Ion Implantation. Quantum Inf. Process. 3, 233–245 (2004).

  • P. B. Grabiec, J. Radojewski, M. Zaborowski, K. Domanski, T. Schenkel, 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. J. Vac. Sci. Technol. B Microelectron. Nanometer Struct. Process. Meas. Phenom. 22, 16 (2004).

  • A. Persaud, F. I. Allen, F. Gicquel, S.-J. Park, J. A. Liddle, T. Schenkel, K. Ivanova, T. Ivanov, I. W. Rangelow, J. Bokor, Single ion implantation with scanning probe alignment. J. Vac. Sci. Technol. B Nanotechnol. Microelectron. 22, 2992–2994 (2004).

  • S. K. Hahto, S. T. Hahto, Q. Ji, K. N. Leung, S. Wilde, E. L. Foley, L. R. Grisham, F. M. Levinton, Multicusp ion source with external rf antenna for production of protons. Rev. Sci. Instrum. 75, 355 (2004).

  • 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).

  • Q. Ji, L. Ji, Y. Chen, K. N. Leung, Combined electron- and ion-beam imprinter and its applications. Appl. Phys. Lett. 85, 4618–4620 (2004).

  • J. Reijonen, K. N. Leung, R. B. Firestone, J. A. English, D. L. Perry, A. Smith, F. Gicquel, M. Sun, H. Koivunoro, T. P. L. et al., First PGAA and NAA experimental results from a compact high intensity D-D neutron generator. Nucl. Instrum. Methods A. 522, 598–602 (2004).

  • S. J. Park, J. A. Liddle, A. Persaud, F. I. Allen, T. Schenkel, J. Bokor, Formation fo 15 nm scale Coloumb blockade structures in silicon by electron beam lithography with a bilayer resist process. J. Vac. Sci. Technol. B Nanotechnol. Microelectron. 22(6), 3115–3118 (2004).

  • T. Schenkel, A. Persaud, S.-J. Park, J. Nilsson, J. Bokor, J. Alexander Liddle, R. Keller, D. H. Schneider, D. W. Cheng, D. E. Humphries, I. W. Rangelow, Processing Issues in Top-Down Approaches to Quantum Computer Development in Silicon. J. Appl. Phys. 94, 1–8 (2003).

  • T. Schenkel, K. J. Wu, Probing nano-environments of peptide molecules on solid surfaces by highly charged ion secondary ion mass spectrometry. Int. J. Mass Spectrom. 229, 47–53 (2003).

  • T. Schenkel, V. Radmilovic, E. A. Stach, S.-J. Park, A. Persaud, Formation of a few nanometer wide holes in membranes with a dual beam focused ion beam system. J. Vac. Sci. Technol. B Microelectron. Nanometer Struct. Process. Meas. Phenom. 21, 2720 (2003).

  • J. Reijonen, M. Eardley, R. Gough, K. N. Leung, R. Thomae, Microwave ion source for low charge state ion production. Nucl. Instrum. Methods A. 511, 301–310 (2003).

  • S. K. Hahto, S. T. Hahto, J. W. Kwan, K. N. Leung, L. R. Grisham, Negative chlorine ions from multicusp radio frequency ion source for heavy ion fusion applications. Rev. Sci. Instrum. 74, 2987 (2003).

  • J. A. Liddle, A. Persaud, S.-J. Park, J. Nilsson, J. Bokor, D. H. Schneider, T. Schenkel, Processing issues in top-down approaches to quantum computer development in silicon (2003).

  • S. Hahto, K. Leung, A. Persaud, J. Reijonen, A multiaperture electron filter for volume-type H− ion source. Rev. Sci. Instrum. 73, 967–969 (2002).

  • T. Schenkel, A. Persaud, A. Kraemer, J. W. McDonald, J. P. Holder, A. V. Hamza, D. H. Schneider, Extraction of highly charged ions from the electron beam ion trap at LBNL for applications in surface analysis and materials science. Rev. Sci. Instrum. 73, 663–666 (2002).

  • J. W. McDonald, R. W. Bauer, D. H. Schneider, Extraction of highly charged ions (up to 90+) from a high-energy electron-beam ion trap. Rev. Sci. Instrum. 73, 30 (2002).

  • T. Schenkel, A. Persaud, S.-J. J. Park, J. Meijer, J. R. Kingsley, J. W. McDonald, J. P. Holder, J. Bokor, D. H. Schneider, Single ion implantation for solid state quantum computer development. J. Vac. Sci. Technol. B Microelectron. Nanometer Struct. Process. Meas. Phenom. 20, 2819 (2002).

  • J. Reijonen, K. N. Leung, G. Jones, RF ion source development for neutron generation and for material modification. Rev. Sci. Instrum. 73, 934 (2002).

  • Q. Ji, T.-J. King, K.-N. Leung, S. B. Wilde, Production of various species of focused ion beam. Rev. Sci. Instrum. 73, 822 (2002).

  • S. Hahto, K. N. Leung, A. Persaud, J. Reijonen, A multiaperture electron filter for volume type H- ion source. Rev. Sci. Instrum. 73, 967–969 (2002).

  • J. Reijonen, Q. Ji, T. J. King, K. N. Leung, A. Persaud, S. Wilde, Compact focusing system for ions and electron beams. J. Vac. Sci. Technol. B Nanotechnol. Microelectron. 20, 180–184 (2002).

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