Publications by Members of the UMER Group

(Does not include abstracts, extended abstracts or unpublished reports)

Publications in Refereed Journals

   2008

  1. Invited: K. Tian, R.A. Kishek, P.G. O'Shea, R.B. Fiorito, D.W. Feldman, and M. Reiser, "Time-Dependent Imaging of Space-Charge-Dominated Electron Beams," Physics of Plasmas 15, 056707 (2008).

   2007

  1. R.A. Kishek, G. Bai, B. Beaudoin, S. Bernal, D. Feldman, R. Feldman, R. Fiorito, T.F. Godlove, I. Haber, T. Langford, P.G. O'Shea, B. Quinn, C. Papadopoulos, M. Reiser, D. Stratakis, D. Sutter, K. Tian, J.C.T. Thangaraj, M. Walter, and C. Wu, "Scaled Experiments Using Electrons to Model Heavy Ion Beams," Journal of Directed Energy, submitted (2007).

  2. J.R. Harris, J.G. Neumann, K. Tian, and P.G. O'Shea, "Longitudinal density modulation and energy conversion in intense beams," Physical Review E 76, 026402 (2007).

  3. D. Stratakis, K. Tian, R.A. Kishek, I. Haber, M. Reiser, and P.G. O'Shea, "Tomographic Phase-Space Mapping of Intense Particle Beams Using Solenoids," Physics of Plasmas (Letters) 14, 120703 (2007).

  4. R.A. Kishek, G. Bai, S. Bernal, D. Feldman, T.F. Godlove, I. Haber, P.G. O'Shea, B. Quinn, C. Papadopoulos, M. Reiser, D. Stratakis, K. Tian, C.J. Tobin, and M. Walter, "Scaled Models: Space-Charge Dominated Electron Storage Rings," International Journal of Modern Physics A 22, 3838 (2007).

  5. Invited: I. Haber, G. Bai, S. Bernal, B. Beaudoin, D. Feldman, R. Fiorito, T.F. Godlove, R. A. Kishek, P.G. O'Shea, B. Quinn, C. Papadopoulos, M. Reiser, J. Rodgers, D. Stratakis, D. Sutter, K. Tian, C.J. Tobin, M. Walter, and C. Wu, "Scaled electron experiments at the University of Maryland," Nuclear Instruments and Methods A 577, 150-156 (2007).

  6. I. Haber, D. Feldman, R. Fiorito, A. Friedman, D.P. Grote, R.A. Kishek, P.G. O'Shea, B. Quinn, M. Reiser, J. Rodgers, D. Stratakis, K. Tian, J.-L. Vay, and M. Walter, "Measurement and Simulation of the time dependent behavior of the UMER source," Nuclear Instruments and Methods A 577, 157-160 (2007).

   2006

  1. S. Bernal, H. Li, R.A. Kishek, B. Quinn, M. Walter, M. Reiser, P.G. O'Shea, and C.K. Allen, "Fixed-Geometry RMS Envelope Matching of Electron Beams from 'Zero' Current to Extreme Space-Charge," Physical Review Special Topics - Accelerators & Beams 9, 064202 (2006).

  2. D. Stratakis, R.A. Kishek, H. Li, S. Bernal, M. Walter, B. Quinn, M. Reiser, and P.G. O'Shea, "Tomography as a Diagnostic Tool for Phase Space Mapping of Intense Particle Beams," Physical Review Special Topics - Accelerators & Beams 9, 112801 (2006).

  3. K. Tian, Y. Zou, Y. Cui, I. Haber, R.A. Kishek, M. Reiser, and P.G. O'Shea, "Experimental observations of longitudinal space-charge waves in intense electron beams," Physical Review Special Topics - Accelerators & Beams 9, 014201 (2006).

  4. Invited: Mark Walter, G. Bai, S. Bernal, I. Haber, M. Holloway, R.A. Kishek, P.G. O'Shea, B. Quinn, M. Reiser, D. Stratakis, and C. Tobin, "Commissioning of the University of Maryland Electron Ring (UMER): Advances toward multi-turn operation," Physics of Plasmas 13, 056703 (2006).

  5. J.R. Harris and P.G. O'Shea, "Gridded Electron Guns and Modulation of Intense Beams," IEEE Transactions on Electron Devices 53(11), 2824-2829 (2006).

  6. J.R. Harris, J.G. Neumann, and P.G. O'Shea, "Governing Factors for Production of Photoemission-Modulated Electron Beams," Journal of Applied Physics 99, 093306 (2006).

  7. Invited: R.A. Kishek, G. Bai, S. Bernal, D. Feldman, T.F. Godlove, I. Haber, P.G. O'Shea, B. Quinn, C. Papadopoulos, M. Reiser, D. Stratakis, K. Tian, C.J. Tobin, and M. Walter, "UMER: An Analog Computer for Dynamics of Swarms Interacting via Long-Range Forces," Nuclear Instruments and Methods A 561, 266-271 (2006).

   2005

  1. Y. Zou, Y. Cui, M. Reiser, and P. G. O'Shea, "Observation of anomalous increase of longitudinal energy spread in a space-charge dominated electron beam," Physical Review Letters 94, 134801 (2005).

  2. B.G. Logan, F.M. Bieniosek, C.M. Celata, E. Henestroza, J.W. Kwan, E.P. Lee, M. Leitner, P.K. Roy, P.A. Seidl, S. Eylon, J.-L. Vay, ..., R.A. Kishek, P. O'Shea, I. Haber, and L.R. Prost, "Overview of US heavy ion fusion research," Nucl. Fusion 45, 131-137 (2005).

  3. J.G. Neumann, J.R. Harris, B. Quinn, and P.G. O'Shea, "Production of Photoemission-Modulated Beams in a Thermionic Electron Gun," Review of Scientific Instruments 76, 033303 (2005); [also reprinted in the Virtual Journal of Ultrafast Science 4 (4), April 2005].

  4. Invited: R.A. Kishek, S. Bernal, Y. Cui, T.F. Godlove, I. Haber, J. Harris, Y. Huo, H. Li, P.G. O'Shea, B. Quinn, M. Reiser, M. Walter, M. Wilson, and Y. Zou, "HIF Research on the University of Maryland Electron Ring (UMER)," Nuclear Instruments and Methods A 544, 179-186 (2005).

  5. Y. Cui, Y. Zou, M. Reiser, R.A. Kishek, I. Haber, S. Bernal, and P.G. O'Shea, "Coherent error study in a retarding field energy analyzer," Nuclear Instruments and Methods A 544, 527-532 (2005).

  6. I. Haber, S. Bernal, R.A. Kishek, P.G. O'Shea, B. Quinn, M. Reiser, Y. Zou, A. Friedman, D. P. Grote, and J.-L. Vay, "Measurement and Simulation of the UMER Beam in the Source Region," Nuclear Instruments and Methods A 544, 441-446 (2005).

  7. H. Li, S. Bernal, T. Godlove, Y. Huo, R.A. Kishek, I. Haber, B. Quinn, M. Walter, Y. Zou, M. Reiser, and P.G. O'Shea, "Beam Control and Matching for the Transport of Intense Beams," Nuclear Instruments and Methods A 544, 367-373 (2005).

  8. Mark Walter, D. Lamb, S. Bernal, T. Godlove, I. Haber, R. Kishek, H. Li, P. O'Shea, B. Quinn, and M. Reiser, "Experimental Tests of the Injection Y on the University of Maryland Electron Ring," Nuclear Instruments and Methods A 544, 374-377 (2005).

   2004

  1. Y. Cui, Y. Zou, M. Reiser, R.A. Kishek, I. Haber, S. Bernal, and P.G. O'Shea, "Measurement of Beam Energy Spread in a Space-Charge Dominated Electron Beam," Physical Review Special Topics - Accelerators & Beams 7, 072801 (2004).

  2. Invited: S. Bernal, H. Li, T. Godlove, I. Haber, R.A. Kishek, B. Quinn, M. Reiser, M. Walter, Y. Zou, and P.G. O'Shea, "Beam Experiments in the Extreme Space-Charge Limit on the University of Maryland Electron Ring (UMER)," Physics of Plasmas 11(5), 2907 (2004).

  3. Invited: J.-L. Vay, P. Colella, J.W. Kwan P. McCorquodale, D.B. Serifini, A. Friedman, D.P. Grote, G. Westenskow, J.-C. Adam, A. Heron, and I. Haber, "Application of Adaptive Mesh Refinement to Particle-in-Cell Simulations of Plasmas and Beams," Physics of Plasmas 11(5), 2928 (2004).

  4. Martin Reiser and Hui Li, "Solutions of the matched K-V envelope equations for a `smooth' asymmetric focusing channel," Journal of Applied Physics 96, 784 (2004).

  5. Y. Cui, Y. Zou, A. Valfells, M. Walter, I. Haber, R.A. Kishek, S. Bernal, M. Reiser, and P.G. O'Shea, "Design and Operation of a Retarding Field Energy Analyzer with Variable Focusing for Space-Charge Dominated Electron Beams," Review of Scientific Instruments 75(8), 2736 (2004).

  6. S. Bernal, B. Beaudoin, Y. Cui, M. Glanzer, T. F. Godlove, J. Harris, M. Holloway, I. Haber, R.A. Kishek, W-T. Lee, H. Li, D. Lamb, B. Quinn, M. Qurius, M. Reiser, A. Valfells, M. Virgo, M. Walter, M. Wilson, R. Yun, Y. Zou, and P. G. O'Shea, "Intense Beam Transport Experiments in a Multi-Bend System at the University of Maryland Electron Ring (UMER)," Nuclear Instruments and Methods A 519, 380-387 (2004).

  7. I. Haber, S. Bernal, C. M. Celata, A. Friedman, D. P. Grote, R.A. Kishek, B. Quinn, P.G. O'Shea, M. Reiser, and J.-L. Vay, "Collective Space-Charge Phenomena in the Source Region," Nuclear Instruments and Methods A 519, 396-404 (2004).

  8. H. Li, S. Bernal, R.A. Kishek, I. Haber, Y. Zou, P.G. O'Shea, and M. Reiser, "Simulation studies on matching of space-charge-dominated beams for the University of Maryland Electron Ring (UMER)," Nuclear Instruments and Methods A 519, 405-411 (2004).

  9. Y. Zou, H. Li, M. Reiser, and P.G. O'Shea, "Theoretical Study of Transverse Emittance Growth in a Gridded Electron Gun," Nuclear Instruments and Methods A 519, 432-441 (2004).

   2003

  1. Y. Zou, Y. Cui, I. Haber, M. Reiser, and P.G. O'Shea, "Longitudinal space-charge effects in a retarding field energy analyzer," Physical Review Special Topics - Accelerators & Beams 6, 112801 (2003).

  2. Invited: C.M. Celata, F.M. Bieniosek, E. Henestroza, ..., S. Bernal, Y. Cui, D. Feldman, T.F. Godlove, I. Haber, J. Harris, R.A. Kishek, H. Li, P.G. O'Shea, B. Quinn, M. Reiser, A. Valfells, M. Walter, Y. Zou, et al., "Progress in heavy ion fusion research," Physics of Plasmas 10 (5), 2064 (2003).

  3. Invited: R.A. Kishek, S. Bernal, C.L. Bohn, D. Grote, I. Haber, H. Li, P.G. O'Shea, M. Reiser, and M. Walter, "Simulations and experiments with space-charge-dominated beams," Physics of Plasmas 10 (5), 2016 (2003).

  4. A. Shkvarunets, R. Fiorito, and P.G. O'Shea, "Optical Diffraction-Transition Radiation Interferometry and Its Application to the Measurement of Beam Divergence," Nuclear Instruments and Methods B 201(1), 153-160 (2003).

   2002

  1. S. Bernal, B. Quinn, P.G. O'Shea, and M. Reiser, "Edge Imaging in Intense Beams," Physical Review Special Topics - Accelerators & Beams 5, 064202 (2002).

  2. Y. Zou, Y. Cui, V. Yun, A. Valfells, R.A. Kishek, S. Bernal, I. Haber, M. Reiser, P.G. O'Shea, and J.G. Wang, "Compact high-resolution retarding field energy analyzer for space-charge-dominated electron beams," Physical Review Special Topics - Accelerators & Beams 5, 072801 (2002).

  3. Invited: A. Valfells, D. Feldman, M. Virgo, P.G. O'Shea, and Y.Y. Lau, "Effects of pulse-length and emitter area on virtual cathode formation in electron guns," Physics of Plasmas 9, 2377 (2002).

  4. Invited: P.G. O'Shea, R.A. Kishek, M. Reiser, B. Beaudoin, S. Bernal, Y. Cui, A. Diep, D. Feldman, M. Glanzer, T.F. Godlove, I. Haber, J. Harris, H. Li, J. Neumann, B. Quinn, M. Qurius, M. Snowel, A. Valfells, M. Virgo, M. Walter, R. Yun, and Y. Zou, "Experiments with Space Charge Dominated Beams for Heavy Ion Fusion Applications," Laser and Particle Beams 20, 599 (2002).

  5. I. Haber, F.M. Bieniosek, C.M. Celata, A. Friedman, D.P. Grote, E. Henestroza, J.-L. Vay, S. Bernal, R.A. Kishek, P.G. O'Shea, M. Reiser, and W.B. Herrmannsfeldt, "End-to-End Simulation: The Front End," Laser and Particle Beams 20, 431 (2002).

   2001

  1. Invited: I. Haber, A. Friedman, D.P. Grote, S. M. Lund, S. Bernal, and R.A. Kishek, "Recent Progress in Heavy Ion Fusion Simulation," Nuclear Instruments and Methods A464, 343-350 (2001).

  2. Invited: P.G. O'Shea, M. Reiser, R.A. Kishek, S. Bernal, H. Li, M. Pruessner, V. Yun, Y. Cui, W. Zhang, Y. Zou, T. Godlove, D. Kehne, P. Haldemann, and I. Haber, "The University of Maryland Electron Ring (UMER)," Nuclear Instruments and Methods A464, 646-652 (2001).

  3. J.J. Barnard, L.E. Ahle, R.O. Bangerter, et al., I. Haber, and R. A. Kishek, "Planning for an Integrated Research Experiment," Nuclear Instruments and Methods A464, 621-628 (2001).

  4. D. Kehne, T. Godlove, P. Haldemann, S. Bernal, S. Guharay, R. Kishek, Y. Li, P. O'Shea, M. Reiser, V. Yun, Y. Zou, and I. Haber, "Injector for the University of Maryland Electron Ring," Nuclear Instruments and Methods A464, 605-609 (2001).

  5. R.A. Kishek, S. Bernal, P.G. O'Shea, M. Reiser, and I. Haber, "Transverse space-charge modes in non-equilibrium beams," Nuclear Instruments and Methods A464, 484-492 (2001).

   2000

  1. R.A. Kishek, P.G. O'Shea, and M. Reiser, "Energy Transfer in non-Equilibrium Space-Charge-Dominated Beams," Physical Review Letters 85 (21), 4514 (2000).

  2. Y. Zou, J. G. Wang, H. Suk, and M. Reiser, "Nonlinear Behavior of Localized Space-Charge Waves in Space-Charge Dominated Beams," Physical Review Letters 84, 5138 (2000).

  3. W.W. Zhang, S. Bernal, H. Li, T. Godlove, R.A. Kishek, P.G. O'Shea, M. Reiser, V. Yun, and M. Venturini, "Design and field measurements of printed-circuit quadrupoles and dipoles," Physical Review Special Topics - Accelerators & Beams 3, 122401 (2000).

   1999

  1. S. Bernal, R.A. Kishek, M. Reiser, and I. Haber, "Observation and Simulation of Radial Density Oscillations in Space-Charge Dominated Electron Beams," Physical Review Letters 82, 4002 (1999).

  2. Invited: I. Haber, A. Friedman, D.P. Grote, S.M. Lund, and R. A. Kishek, "Recent Progress in the Simulations of Heavy Ion Beams," Physics of Plasmas 6, 2254 (1999).

  3. H. Suk, J. G. Wang, M. Reiser, and Y. Zou, "Experiments on Space-Charge Waves in Electron Beams Propagating Through a Resistive-Wall Channel," Journal of Applied Physics 86, 1699 (1999).

   1998

  1. M. Venturini and M. Reiser, "rms Envelope Equations in the Presence of Space Charge and Dispersion," Physical Review Letters 81, 96-99 (1998).

  2. M. Venturini and M. Reiser, "Self-consistent beam distributions with space charge and dispersion in a circular ring lattice," Physical Review E 57, 4725-4732 (1998).

  3. S. Bernal, P. Chin, R. Kishek, Y. Li, M. Reiser, J.G. Wang, T. Godlove, and I. Haber, "Transport of a space-charge dominated electron beam in a short-quadrupole channel," Physical Review Special Topics - Accelerators & Beams 1, 044202 (1998).

  4. Invited: R.A. Kishek, Y.Y. Lau, L.K. Ang, A. Valfells, and R.M. Gilgenbach, "Multipactor Discharge on Metals and Dielectrics: Historical Review and Recent Theories," Physics of Plasmas 5 (5), 2120 (1998).

  5. J.G. Wang and M. Reiser, "Longitudinal space-charge waves and instabilities in intense beams," Physics of Plasmas 5 (5), 2064-2070 (1998).

  6. R.A. Kishek, S. Bernal, M. Reiser, M. Venturini, J.G. Wang, I. Haber, and T. Godlove, "Beam Dynamics Simulations of the University of Maryland Electron-Ring Project," Nuclear Instruments and Methods A415, 417-421 (1998).

  7. J.G. Wang, S. Bernal, P. Chin, R.A. Kishek, Y. Li, M. Reiser, M. Venturini, Y. Zou, T. Godlove, I. Haber, and R. C. York, "Studies of Space-Charge Dominated Beams for Heavy Ion Inertial Fusion," Nuclear Instruments and Methods A415, 422-427 (1998).

   1997

  1. J.G. Wang, H. Suk, and M. Reiser, "Experimental Investigation of the Resistive-Wall Instability for Localized Perturbations in the Long-Wavelength Range," Physical Review Letters 79, 1042-1045 (1997).

   1996

  1. S. Bernal, A. Dragt, M. Reiser, M. Venturini, J.G. Wang, and T. Godlove, "Matching section and inflector design for a model electron ring," Fusion Engineering and Design 32-33, 277-281 (1996).

  2. M. Reiser, S. Bernal, A. Dragt, M. Venturini, J.G. Wang, H. Onishi, and T.F. Godlove, "Design features of small electron ring for study of recirculating space-charge dominated beams," Fusion Engineering and Design 32-33, 293-298 (1996).

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