Experimental verification of a longitudinal beam-envelope model for a space-charge dominated

Wang, D.X.; Wang, J.G.; Kehne, D.; Reiser, M.
June 1993
Applied Physics Letters;6/21/1993, Vol. 62 Issue 25, p3232
Academic Journal
Examines the longitudinal electron beam-envelope model for a space-charge dominated parabolic bunch. Prediction of the parabolic bunch behavior; Generation of parabolic beam profiles by pulse shape regulation; Calculation of the longitudinal space-charge field.


Related Articles

  • Simulations and experiments with space-charge-dominated beams. Kishek, R. A.; Bernal, S.; Bohn, C. L.; Grote, D.; Haber, I.; Li, H.; O’Shea, P. G.; Reiser, M.; Walter, M. // Physics of Plasmas;May2003, Vol. 10 Issue 5, p2016 

    Beams in which space charge forces are stronger than the force from thermal pressure are nonneutral plasmas, since particles interact mostly via the long-range collective potential. An ever-increasing number of applications demand such high-brightness beams. The University of Maryland Electron...

  • High Intensity Beam and X-Ray Converter Target Interactions and Mitigation. Chen, Yu-Jiuan; McCarrick, James F.; Guethlein, Gary; Caporaso, George J.; Chambers, Frank; Falabella, Steven; Lauer, Eugene; Richardson, Roger; Sampayan, Steve; Weir, John // AIP Conference Proceedings;2002, Vol. 647 Issue 1, p240 

    Ions extracted from a solid surface or plasma by impact of an high intensity and high current electron beam can partially neutralize the beam space charge and change the focusing system. We have investigated ion emission computationally and experimentally. By matching PIC simulation results with...

  • Semi-Analytical 6D Space Charge Model for Dense Electron Bunches with Large Energy Spreads. Fubiani, Gwenaël; Dugan, Gerald; Leemans, Wim; Esarey, Eric; Bobin, Jean Louis // AIP Conference Proceedings;2002, Vol. 647 Issue 1, p203 

    Laser driven accelerators are capable of producing multi nC, multi MeV electron beams with transverse and longitudinal sizes on the order of microns. To investigate the transport of such electron bunches, a fast and fully relativistic space charge code which can handle beams with arbitrarily...

  • Studies of electron beams propagation in space-charge regime. Martina, L.; Nassisi, V.; Pedone, A.; Pompa, P. P.; Raganato, G. // Review of Scientific Instruments;Jul2002, Vol. 73 Issue 7, p2552 

    We report the experimental characteristics of electron beam propagation under space-charge regime. The electron beams were generated by a Nb polycrystalline photocathode illuminated by two different excimer lasers, a XeCl (308 nm) and a KrCl (222 nm). The laser photon energies were very close to...

  • Space-charge controlled fast electron beam pulsing. Ruan, Chong-Yu; Fink, Manfred // Journal of Applied Physics;1/1/2001, Vol. 89 Issue 1, p654 

    The generation of fast electron beam pulses by voltages in the range of 1 V is presented. Two emission mechanisms are described, where the one which utilizes thermal electron confinement in the proximity of a sharp filament proves to be more advantageous. We have observed pulsewidth of 5 ns,...

  • Computer simulation of electron beams. I. Space-charge algorithm for asymmetric beams. de Wolf, D. A. // Journal of Applied Physics;11/15/1985, Vol. 58 Issue 10, p3692 

    Part I. Presents information on a study which demonstrated the numerical calculation of asymmetric electron beams using space-charge algorithm. Neglect of longitudinal space-charge forces; Development of the algorithm; Numerical results.

  • Microwave signal amplification and Pierce instability on radial electron flows in cylindrical and... Gnavi, Graciela; Gratton, Fausto T. // Physics of Plasmas;Nov94, Vol. 1 Issue 11, p3676 

    Studies linear space charge perturbations of focused electron beams flowing between cylindrical and spherical electrodes on convergent or divergent trajectories. Computation of the amplification of high-frequency signals when the flow is modulated at one electrode; Instability of electron beams...

  • A theory of space-charge limiting current for a relativistic electron beam. Uhm, Han S. // Physics of Fluids B: Plasma Physics;Jun93, Vol. 5 Issue 6, p1919 

    A theory of the space-charge limiting current is developed for a relativistic electron beam propagating through a grounded conducting cylinder. The beam electron density is assumed to be uniform. It is found that the propagating current depends very sensitively on the current density profile....

  • Influence of a biased beam dump on H- beam neutralization measurements with a four-grid energy analyzer. Sherman, Joseph; Pitcher, Eric; Allison, Paul // Review of Scientific Instruments;Jan1990, Vol. 61 Issue 1, p616 

    A four-grid energy analyzer diagnostic has been developed for the study of H[sup -] beam space-charge compensation, and first measurements have been reported previously. Biased beam-dump measurements were undertaken to clarify the origin of electron currents measured in the FGA because they far...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics