PROBABILISTIC APPROACH TO MONTE-CARLO OPERATORS

被引：5
|
作者：
TESSAROTTO, M [1 ]
WHITE, RB [1 ]
ZHENG, LJ [1 ]
机构：
[1] PRINCETON UNIV, PRINCETON PLASMA PHYS LAB, PRINCETON, NJ 08543 USA
来源：
PHYSICS OF PLASMAS | 1994年 / 1卷 / 08期
关键词：
D O I：
10.1063/1.870586
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：
A general method for constructing Monte Carlo collision operators is formulated based on the introduction of a stochastic Liouville equation. The approach is applied to the investigation of a suitable discretized gyrokinetic equation describing the dynamics of a strongly rotating multispecies plasma, in a toroidally axisymmetric configuration. Improved expressions are obtained for the Monte Carlo collision operators for general non-normal (in v space) coordinate systems. As an application, the important case of the bounce-averaged gyrokinetic equation is discussed, in various cases of interest. Finally, using an approximate collision operator, the friction coefficients are evaluated and expressed in terms of energy and momentum restoring coefficients, thus yielding for the Monte Carlo operators a representation convenient for their numerical implementation.
引用
收藏
页码：2591 / 2602
页数：12
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