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arXiv 1301.0943physics.plasm-ph
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不完全等离子体色散函数:性质及其在有界等离子体中的应用

The incomplete plasma dispersion function: properties and application to waves in bounded plasmas

Scott D. Baalrud

摘要:

不完全等离子体色散函数是等离子体色散函数的推广,其中定义积分跨越半无限域而不是无限域。当分布函数在速度相空间中的有限或半无限区间上近似为麦克斯韦分布时,它对于描述非麦克斯韦等离子体中的线性介电响应和波色散是有用的。一个普遍存在的例子是在边界鞘或双层附近发现的耗尽麦克斯韦电子分布,其中通过间隔可以被建模为麦克斯韦,其温度低于捕获间隔。耗尽麦克斯韦被用作一个例子来演示使用不完全等离子体色散函数计算修改波色散关系的效用。

英文摘要:

The incomplete plasma dispersion function is a generalization of the plasma dispersion function in which the defining integral spans a semi-infinite, rather than infinite, domain. It is useful for describing the linear dielectric response and wave dispersion in non-Maxwellian plasmas when the distribution functions can be approximated as Maxwellian over finite, or semi-infinite, intervals in velocity phase-space. A ubiquitous example is the depleted Maxwellian electron distribution found near boundary sheaths or double layers, where the passing interval can be modeled as Maxwellian with a lower temperature than the trapped interval. The depleted Maxwellian is used as an example to demonstrate the utility of using the incomplete plasma dispersion function for calculating modifications to wave dispersion relations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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