Accession Number : AD0719798

Title :   Collisional Effects on Waves in a Magnetoplasma.

Descriptive Note : Interim rept. 22 Nov 68-31 May 70,

Corporate Author : STANFORD UNIV CALIF INST FOR PLASMA RESEARCH

Personal Author(s) : Howell,John Quayle

Report Date : NOV 1970

Pagination or Media Count : 167

Abstract : A new class of collision-dependent electron waves is found in a non-Maxwellian Lorentz magnetoplasma, and it is shown that these waves may be driven unstable by electron-neutral collisions. The Boltzmann equation with collision integral is solved, assuming propagation either parallel or perpendicular to the magnetic field. Both conductivity tensors are derived and put in a form useful for numerical calculations. The full set of Maxwell's equations is then used to derive the dispersion relations for both directions of propagation. The dispersion relations are initially solved for a monoenergetic electron distribution function and following that a distribution with a peak of nonzero halfwidth is treated. Some consideration is also given to a Maxwellian distribution both with and without a bump on the tail. As an example of propagation parallel to the magnetic field, transverse electromagnetic or whistler waves are considered. (Author)

Descriptors :   (*OSCILLATION, MATHEMATICAL ANALYSIS), ELECTROSTATIC FIELDS, TRANSPORT PROPERTIES, PARTIAL DIFFERENTIAL EQUATIONS, ELECTRON DENSITY, DISTRIBUTION FUNCTIONS, ELECTRICAL CONDUCTIVITY, STABILITY, CYCLOTRON RESONANCE PHENOMENA, MAGNETIC FIELDS, (U)MAGNETIC FIELDS

Subject Categories : Plasma Physics and Magnetohydrodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE