Accession Number : AD0697576

Title :   INFLUENCE OF COLLISIONS ON THE INSTABILITY OF AN ELECTRON BEAM IN A PLASMA,

Corporate Author : ILLINOIS UNIV URBANA COORDINATED SCIENCE LAB

Personal Author(s) : Raether,M.

Report Date : NOV 1969

Pagination or Media Count : 43

Abstract : The report contains a numerical and analytical study of the dispersion relation of a Lorentzian beam in a cold plasma with collisions. Numerical results for the growth rate, the mode structure and the group velocity are presented for selected parameters, analytical generalizations of these results are given, both for the case of real wavenumber and real frequency. In particular it is shown that in either case the high frequency instability is quenched for a sufficiently large velocity spread and collision frequency, and that this quenching occurs over a much larger parameter range than was previously assumed. (Author)

Descriptors :   (*PLASMA MEDIUM, *ELECTRON BEAMS), STABILITY, DISPERSION RELATIONS, INTERACTIONS, VELOCITY

Subject Categories : Plasma Physics and Magnetohydrodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE