Collisional energy transfer in two-component plasmas

J. Vranjes, M. Kono, S. Poedts, M. Y. Tanaka

doi:10.1063/1.2977987

Collisional energy transfer in two-component plasmas

DOI PDF 被引用文献2件

J. Vranjes

Center for Plasma Astrophysics 1 and Leuven Mathematical Modeling and Computational Science Center, Celestijnenlaan 200B, 3001 Leuven, Belgium
M. Kono

Chuo University 3 Faculty of Policy Studies, , Hachioji, Tokyo 192-0393, Japan
S. Poedts

Center for Plasma Astrophysics 1 and Leuven Mathematical Modeling and Computational Science Center, Celestijnenlaan 200B, 3001 Leuven, Belgium
M. Y. Tanaka

Kyushu University 4 Department of High Energy Engineering Science, , Kasuga-koen 6-1, Kasuga, Fukuoka 816-8580, Japan

抄録

<jats:p>The friction in plasmas consisting of two species with different temperatures is discussed together with the consequent energy transfer. It is shown that the friction between the two species has no effect on the ion acoustic mode in a quasineutral plasma. Using the Poisson equation instead of the quasineutrality reveals the possibility for an instability driven by the collisional energy transfer. However, the different starting temperatures of the two species imply an evolving background. It is shown that the relaxation time of the background electron-ion plasma is, in fact, always shorter than the growth rate time. Therefore the instability is unlikely to develop. The results obtained here should contribute to the definite clarification of some contradictory results obtained in the past.</jats:p>