Linear Vlasov stability in one-dimensional double layers

Details Linear Vlasov stability in one-dimensional double layers Linear Vlasov stability in one-dimensional double layers

May 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987lpb.....5..287t&link_type=abstract

(NASA, Conference on Double Layers in Plasmas, Huntsville, AL, Mar. 1986) Laser and Particle Beams (ISSN 0263-0346), vol. 5, May

Physics

Magnetohydrodynamic Stability, One Dimensional Flow, Plasma Layers, Vlasov Equations, Dielectrics, Electron Energy, Plasma Potentials, Plasma Resonance

Scientific paper

Analytical study of thef linear stability of one-dimensional double layers in nonmagnetized plasmas based on the solution of the Vlasov-Poisson system is presented. Electromagnetic effects are not included. A self-consistent equilibrium electrostatic potential Phi sub 0(z) that monotonically increases from a low level z = negative infinity to a high level at z = positive infinity is assumed. This potential is modeled as a piecewise continuous function of Z. The BGK states for the Vlasov-Poisson system provide an explicit expression for the velocity distribution of the reflected electrons required for the particular double layer configuration. The stability of the double layers is studied via the linearized Vlasov and Poisson equations using the WKB approximation.

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