Selected Publications

2023

W. Redjem, A. J. Amsellem, F. I. Allen, G. Benndorf, J. Bin, S. Bulanov, E. Esarey, L. C. Feldman, J. Ferrer Fernandez, J. Garcia Lopez, L. Geulig, C. R. Geddes, H. Hijazi, Q. Ji, V. Ivanov, B. Kanté, A. Gonsalves, J. Meijer, K. Nakamura, A. Persaud, I. Pong, L. Obst-Huebl, P. A. Seidl, J. Simoni, C. Schroeder, S. Steinke, L. Z. Tan, R. Wunderlich, B. Wynne, T. Schenkel, Defect engineering of silicon with ion pulses from laser acceleration. Communications Materials. 4, 1–10 (2023). doi:10.1038/s43246-023-00349-4
T. Schenkel, A. M. Snijders, K. Nakamura, P. A. Seidl, B. Mak, L. Obst-Huebl, H. Knobel, I. Pong, A. Persaud, J. van Tilborg, T. Ostermayr, S. Steinke, E. A. Blakely, Q. Ji, A. Javey, R. Kapadia, C. G. R. Geddes, E. Esarey, Carbon nanotube substrates enhance SARS-CoV-2 spike protein ion yields in matrix-assisted laser desorption–ionization mass spectrometry. Appl. Phys. Lett. 122, 050601 (2023), doi:10.1063/5.0128667.
W. Redjem, Y. Zhiyenbayev, W. Qarony, V. Ivanov, C. Papapanos, W. Liu, K. Jhuria, Z. Al Balushi, S. Dhuey, A. Schwartzberg, L. Tan, T. Schenkel, B. Kanté, All-silicon quantum light source by embedding an atomic emissive center in a nanophotonic cavity. arXiv [quant-ph] (2023), arxiv:2301.06654.

2022

J. Simoni, V. Ivanov, T. Schenkel, L. Z. Tan, Phonon Induced Spin Dephasing Time of Nitrogen Vacancy Centers in Diamond from First Principles. arXiv [quant-ph] (2022), arxiv:2209.11412.
L. D. Geulig, L. Obst-Huebl, K. Nakamura, J. Bin, Q. Ji, S. Steinke, A. M. Snijders, J.-H. Mao, E. A. Blakely, A. J. Gonsalves, S. Bulanov, J. van Tilborg, C. B. Schroeder, C. G. R. Geddes, E. Esarey, M. Roth, T. Schenkel, Online charge measurement for petawatt laser-driven ion acceleration. Rev. Sci. Instrum. 93, 103301 (2022), doi:10.1063/5.0096423.
V. Ivanov, J. Simoni, Y. Lee, W. Liu, K. Jhuria, W. Redjem, Y. Zhiyenbayev, C. Papapanos, W. Qarony, B. Kanté, A. Persaud, T. Schenkel, L. Z. Tan, Effect of localization on photoluminescence and zero-field splitting of silicon color centers. Phys. Rev. B Condens. Matter. 106, 134107 (2022), doi: 10.1103/PhysRevB.106.134107.
Grant Giesbrecht , Ariel Amsellem , Timo Bauer, Brian Mak, Brian Wynne, Zhihao Qin, Arun Persaud, Hardware-Control: Instrument control and automation package, Journal of Open Source Software, 7(72), 2688 (2022), doi:10.21105/joss.02688.
S. A. Lyon, K. Castoria, E. Kleinbaum, Z. Qin, A. Persaud, T. Schenkel, K. Zurek, Single Phonon Detection for Dark Matter via Quantum Evaporation and Sensing of 3Helium. arXiv [hep-ex] (2022), arxiv:2201.00738.
T. Schenkel, W. Redjem, A. Persaud, W. Liu, P. A. Seidl, A. J. Amsellem, B. Kanté, Q. Ji, Exploration of Defect Dynamics and Color Center Qubit Synthesis with Pulsed Ion Beams. Quantum Beam Science. 6, 13 (2022).

2021

E. Albertinale, L. Balembois, E. Billaud, V. Ranjan, D. Flanigan, T. Schenkel, D. Estève, D. Vion, P. Bertet, E. Flurin, Detecting spins by their fluorescence with a microwave photon counter. Nature. 600, 434–438 (2021), doi:10.1038/s41586-021-04076-z.
F. I. Allen, T. C. Pekin, A. Persaud, S. J. Rozeveld, G. F. Meyers, J. Ciston, C. Ophus, A. M. Minor, Fast Grain Mapping with Sub-Nanometer Resolution Using 4D-STEM with Grain Classification by Principal Component Analysis and Non-Negative Matrix Factorization. Microsc. Microanal. 27, 794–803 (2021). https://doi.org/10.1017/S1431927621011946
R. E. Lake, A. Persaud, C. Christian, E. S. Barnard, E. M. Chan, A. A. Bettiol, M. Tomut, C. Trautmann, T. Schenkel, Direct formation of nitrogen-vacancy centers in nitrogen doped diamond along the trajectories of swift heavy ions. Appl. Phys. Lett. 118, 084002 (2021). http://dx.doi.org/10.1063/5.0036643
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
M. Bandstra, A. Persaud, J. Curtis, C. H. Chow, D. Hellfeld, M. Salathe, J. Vavrek. "becquerel (bq) v0.4.0." Computer software. September 27, 2021. https://github.com/lbl-anp/becquerel. https://doi.org/10.11578/dc.20211007.1.
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.

2010-2017

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).
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).
G. A. Machicoane, T. Schenkel, T. R. Niedermayr, M. W. Newmann, A. V. Hamza, A. V. Barnes, J. W. McDonald, J. A. Tanis, D. H. Schneider, Internal dielectronic excitation in highly charged ions colliding with surfaces. Phys. Rev. A. 65, 042903 (2002).
T. Schenkel, A. Kraemer, K.-N. Leung, A. V. Hamza, J. W. Mcdonald, D. H. Schneider, Highly charged ion-secondary ion mass spectrometry (HCI-SIMS): toward metrology solutions for sub-100-nm technology nodes (SPIE, 2001; http://dx.doi.org/10.1117/12.452558).
A. Persaud, K.-N. Leung, J. Reijonen, Compact electron beam focusing column (SPIE, 2001; http://dx.doi.org/10.1117/12.451269), vol. 4510.
A. V. Hamza, M. W. Newman, P. A. Thielen, H. W. H. Lee, T. Schenkel, J. W. McDonald, D. H. Schneider, Light-emitting nanostructers formed by intense, ultrafast electronic excitation in silicon (100). Appl. Phys. Lett. 79, 2973–2975 (2001).
T. Schenkel, A. V. Hamza, M. W. Newman, G. Machicoane, J. W. McDonald, D. H. Schneider, K. J. Wu, V. K. Lichtenstein, Transport of Hollow Atoms Through Thin Dielectric Films. Phys. Scr. T92, 208–210 (2001).
J. Reijonen, M. Eardley, R. Gough, R. Keller, K. Leung, R. Thomae, D. Pickard, M. D. Williams, Improvement of the lifetime of radio frequency antenna for plasma generation. Rev. Sci. Instrum. 71, 1134–1136 (2000).
Y. Lee, Q. Ji, K. N. Leung, N. Zahir, Nanobeam production with the multicusp ion source. Rev. Sci. Instrum. 71, 722 (2000).