Thin electron beam propagation in plasmas

Details Thin electron beam propagation in plasmas Thin electron beam propagation in plasmas

May 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ap%26ss.203..181k&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 203, no. 2, p. 181-187.

Astronomy and Astrophysics

Astrophysics

Beam Interactions, Cosmic Plasma, Electron Beams, Plasma-Particle Interactions, Two Dimensional Models, Beam Injection, Ion Distribution, Lines Of Force

Scientific paper

The propagation of dense electron beams and the interaction with the ambient plasmas are studied by using two-dimensional electrostatic simulations. When the width of the beam is of the order of electron gyro-radius, the beam electrons move across the magnetic field lines, and the beam-plasma interaction becomes prominent with the reduced beam density. When the width of the beam is of the order of ion gyro-radius, the propagation of beam electrons is possible only with the formation of the ion channel. However, since the time scale of the ionic motion is much longer than that of the electronic motion, most of the beam electrons return back to the original beam injection region.

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