具有球形对称速度空间的均质等离子体的一般弛豫模型

Yanpeng Wang, Shichao Wu, Peifeng Fan
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引用次数: 0

摘要

引入了一个动量闭合模型作为一般弛豫模型,该模型是针对具有球形对称速度空间的均质等离子体的 Vlasov-Fokker-Planck 方程推导出来的。这一非线性模型的封闭形式是通过引入一组新函数 R 函数和 R 积分来表示的。该模型基于有限可区分独立特征假说,可以捕捉平衡态的本质。从这一弛豫模型推导出了一般温度弛豫模型,并给出了当速度空间呈现球对称性时温度弛豫的一般特征频率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
General relaxation model for a homogeneous plasma with spherically symmetric velocity space
A kinetic moment-closed model, derived from the Vlasov-Fokker-Planck equation for homogeneous plasma with spherically symmetric velocity space, is introduced as a general relaxation model. The closed form of this nonlinear model is presented by introducing a set new functions called R function and R integration. This model, based on the finitely distinguishable independent features hypothesis, allows for capturing the nature of equilibrium state. From this relaxation model, a general temperature relaxation model is derived and the general characteristic frequency of temperature relaxation when velocity space exhibits spherical symmetry is presented.
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