Collective modes in some Fokker-Planck Coulomb systems: One-dimensional case

Amal K. Das

Physica A: Statistical Mechanics and its Applications, 1977, vol. 87, issue 1, 167-176

Abstract: The collective modes in two Fokker-Planck Coulomb systems are studied in one dimension and in the long wavelength limit. The Fokker-Planck “friction coefficient”, which can be related to the viscosity of the medium through the Stokes' law, is treated as a parameter. In a single component system it is shown under what circumstances the propagative plasma mode can become a diffusive mode. Depending on an inequality involving the friction coefficient and the plasmon frequency, the collective mode can illustrate certain properties of the so-called central peak. A two-component Vlasov-Fokker-Planck system exhibits three modes analogous to the Rayleigh scattering in a viscous fluid.

Date: 1977
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:87:y:1977:i:1:p:167-176

DOI: 10.1016/0378-4371(77)90174-1

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