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Effect of beam density on nonlinear amplification of inverse-bremsstrahlung electron acceleration

Published online by Cambridge University Press:  01 June 1997

A. C. J. PAES
Affiliation:
IEAv, Centro Técnico Aeroespacial, 12231-590 São José dos Campos, SP, Brasil
M. VIRGÍNIA ALVES
Affiliation:
Instituto Nacional de Pesquisas Espaciais, PO Box 515, 12201-970 São José dos Campos, SP, Brasil
R. M. O. GALVÃO
Affiliation:
Instituto de Física, Universidade de São Paulo, 05359-970 São Paulo, Brasil
A. SERBETO
Affiliation:
Instituto de Física, Universidade Federal Fluminense, Av. Litorânea s/n, 24000 Campus do Gragoatá, Niterói, RJ, Brasil
M. S. HUSSEIN
Affiliation:
Instituto de Física, Universidade de São Paulo, 05359-970 São Paulo, Brasil

Abstract

An electromagnetic particle-in-cell simulation code is used to investigate particle density effects on the nonlinear amplification of inverse-bremsstrahlung electron acceleration, according to the schemes proposed by Kawata et al. and by Hussein and Pato. It is shown that although the space-charge self-consistent field does not modify the basic results obtained with the one-particle model, the electromagnetic fields produced by the transverse particle current play a substantial role for large beam densities.

Type
Research Article
Copyright
1997 Cambridge University Press

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