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Theory and computer simulation of electron beam-plasma interactions in unbounded systems

Published online by Cambridge University Press:  13 March 2009

S. Cuperman
Affiliation:
Department of Physics and Astronomy, Tel-Aviv University, Ramat Aviv, Israel
I. Roth
Affiliation:
Department of Physics and Astronomy, Tel-Aviv University, Ramat Aviv, Israel
W. Bernstein
Affiliation:
Space Environment Laboratory, ERL-NOAA, Boulder, Colorado, U.S.A.

Abstract

Computer simulation experiments of linear and nonlinear collisionless interactions between electron beams and background plasmas, for conditions relevant to active magnetospheric experiments, were carried out. Both electrostatic and electromagnetic interactions were simultaneously considered. The beam-plasma systems were infinite and homogeneous.

The relative beam concentrations considered were ε ≡ nb/np, = 1, 0·1 and 0·01. In all cases, the background plasma (1 eV thermal energy) was penetrated by an electron beam of 1 keV streaming energy and 5 % thermal spread in the streaming direction.

The paper presents a full description of the results and a brief discussion of their relevance to magnetospheric active experiments.

The off-angle propagation case in unmagnetized plasmas is also briefly discussed.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1976

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