受污染等离子体的环向漂移模式稳定性

Physics of fluids. B, Plasma physics Pub Date : 1993-11-01 DOI:10.1063/1.860621

A. Jarmén, M. Fröjdh

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引用次数: 15

摘要

用流体描述法研究了含杂质离子和主离子两种离子等离子体的环面漂移模式特征和稳定性。当ηi<1时，杂质和主离子温度梯度(ITG)模式占主导地位，而当ηi<1时，也存在耗散捕获电子(DTE)和杂质诱导模式。根据杂质和主离子流体给出的条件，导出了稳定阈值的简单解析表达式。

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Toroidal drift mode stability in a contaminated plasma

Toroidal drift mode features and stability are studied, using a fluid description, for a plasma with two ion species: impurity and main ions. Impurity and main ion temperature gradient (ITG) modes dominate for larger temperature gradients, ηi≳1, while dissipative trapped electron (DTE) and impurity‐induced modes are present also for ηi<1. Simple analytical expressions for the stability thresholds are derived from conditions given by the impurity and main ion fluids.

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Physics of fluids. B, Plasma physics

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