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Electron acceleration by high current-density relativistic electron bunch in plasmas

Published online by Cambridge University Press:  19 June 2007

C.T. ZHOU ,
M.Y. YU  and
X.T. HE
C.T. ZHOU
Affiliation:
Institute of Applied Physics and Computational Mathematics, Beijing, People's Republic of China Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou, People's Republic of China
M.Y. YU
Affiliation:
Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou, People's Republic of China Institut für Theoretische Physik I, Ruhr-Universität Bochum, Bochum, Germany
X.T. HE
Affiliation:
Institute of Applied Physics and Computational Mathematics, Beijing, People's Republic of China Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou, People's Republic of China
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Abstract

Electron acceleration by a short high-current relativistic electron bunch (EB) in plasmas at three characteristic densities is studied by particle-in-cell simulation. It is found that if the EB is appropriately matched to the background plasma, the blowout space-charge field of the EB can accelerate the trailing bunch electrons at very high energy gain rate. This high energy gain, as well as the large-amplitude wakefield, the turbulent small-scale electron plasma waves, and the formation of large current peaks, are studied. The evolution of the EB, its blowout field, and other related parameters are shown to be self-similar.

Keywords

Beam-plasma interactionHigh-current particle acceleratorPIC simulationSmall-scale turbulent plasma waves
Type
Research Article
Information
Laser and Particle Beams , Volume 25 , Issue 2 , June 2007 , pp. 313 - 319
Copyright
© 2007 Cambridge University Press

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