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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Synergy of plasma resistivity and electron viscosity in mediating double tearing modes in cylindrical plasmas
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Synergy of plasma resistivity and electron viscosity in mediating double tearing modes in cylindrical plasmas

机译：在圆柱等离子体中介导双撕裂模式下等离子体电阻率和电子粘度的协同作用

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摘要

The linear behaviors of the double tearing mode (DTM) mediated by parallel electron viscosity and plasma resistivity in cylindrical plasmas with reversed magnetic shear and thus two resonant rational flux surfaces are numerically investigated in this paper. It is shown that DTMs mediated by electron viscosity alone behave similarly to the DTMs mediated by resistivity alone. DTMs mediated by electron viscosity are found to be enhanced by plasma resistivity, which is in such a range that the growth rate of the modes induced by the latter alone is comparable with that of the modes mediated by the former alone, and vice versa. Otherwise the growth rate of the modes is equal to the higher of the modes mediated by resistivity or electron viscosity alone when both resistivity and electron viscosity are taken into account. The enhancement is found to be closely related to the profiles of the stream function.
机译：本文通过反向电子剪切作用在圆柱等离子体中由平行电子粘度和等离子体电阻率介导的双撕裂模式（DTM）的线性行为进行了数值研究。结果表明，仅由电子粘度介导的DTM的行为与仅由电阻率介导的DTM的行为相似。发现由电子粘度介导的DTM通过血浆电阻率而得以增强，血浆电阻率在这样的范围内，即由后者单独诱导的模式的生长速率与单独由前者介导的模式的生长速率相当，反之亦然。否则，当同时考虑电阻率和电子粘度时，模的生长速率等于仅由电阻率或电子粘度介导的模的较高者。发现增强与流功能的配置文件密切相关。

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