
Accession Number : ADA134115
Title : Plasma Theory and Simulation.
Descriptive Note : Quarterly progress rept. no. 4, 1 Oct31 Dec 81,
Corporate Author : CALIFORNIA UNIV BERKELEY ELECTRONICS RESEARCH LAB
Personal Author(s) : Birdsall,C K
PDF Url : ADA134115
Report Date : 31 Dec 1981
Pagination or Media Count : 12
Abstract : As discussed in a previous document, the ion distribution function in the thermalbarrier region of a tandem mirror machine can be unstable to electrostatic and/or electromagnetic twostream modes. In this document the author examines the analytic stability in an infinite medium of those electronic ionion twostream modes which have their wave vector, k, parallel to the axial magnetic field (this is equivalent to examining 1d localized stability). The point of our doing inhomogenous simulations is precisely to examine any noninfinite medium effects on the instability in a thermal barrier. Any unstable ionion twostream modes are expected to have wavelengths of order wavelength di; since the thermalbarrier cell itself is much longer that this, our analytic (local) approximation will provide at least a zerothorder estimate of instability as well as a reference from which to measure any inhomogenity effects recovered later by our particle simulation runs.
Descriptors : *Plasmas(Physics), *Ion ion interactions, Distribution functions, Cells, Barriers, Heating, Electrostatics, Stability, Waves, Vector analysis, Magnetic fields, Simulation, Homogeneity, Approximation(Mathematics), Estimates, Ion beams, Collisions, Electromagnetic properties, Electrons, High density, Trapping(Charged particles)
Subject Categories : Plasma Physics and Magnetohydrodynamics
Distribution Statement : APPROVED FOR PUBLIC RELEASE