NUMERICAL SIMULATIONS OF PERTURBED VLASOV EQUILIBRIA

被引：36

作者：

DEMEIO, L

ZWEIFEL, PF

机构：

[1] Center for Transport Theory and Mathematical Physics, Virginia Polytechnic Institute, State University, Blacksburg

来源：

PHYSICS OF FLUIDS B-PLASMA PHYSICS | 1990年 / 2卷 / 06期

关键词：

D O I：

10.1063/1.859265

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

In this work, the long-time behavior of the solutions of the Vlasov-Poisson system when starting near a spatially homogeneous equilibrium is analyzed numerically. It is found that the asymptotic state toward which the system evolves is not a Bernstein-Green-Kruskal (BGK) equilibrium, but can rather be described by a superposition of BGK modes. Also, it is shown that the small oscillations at the plasma frequency after saturation in the one-sided bump-on-tail instability are due to beating between the unstable mode and the least stable mode. © 1990 American Institute of Physics.

引用

页码：1252 / 1255

页数：4

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