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The spherical multipole resonance probe: kinetic damping in its spectrum
Plasma Sources Science and Technology ( IF 3.8 ) Pub Date : 2020-04-29 , DOI: 10.1088/1361-6595/ab759f
J Oberrath

The multipole resonance probe is one of the recently developed measurement devices to measure plasma parameter like electron density and temperature based on the concept of active plasma resonance spectroscopy. The dynamical interaction between the probe and the plasma in electrostatic, kinetic description can be modeled in an abstract notation based on functional analytic methods. These methods provide the opportunity to derive a general solution, which is given as the response function of the probe-plasma system. It is defined by the matrix elements of the resolvent of an appropriate dynamical operator. Based on the general solution a residual damping for vanishing pressure can be predicted and can only be explained by kinetic effects. Within this manuscript an explicit response function of the multipole resonance probe is derived. Therefore, the resolvent is determined by its algebraic representation based on an expansion in orthogonal basis functions. This allows to compute an approximated response function and its corresponding spectra, which show additional damping due to kinetic effects.

中文翻译:

球形多极共振探头:其频谱中的动力学阻尼

多极共振探头是最近开发的一种测量设备,用于基于有源等离子体共振光谱的概念测量电子密度和温度等等离子体参数。静电动力学描述中探针和等离子体之间的动力学相互作用可以基于功能分析方法以抽象符号建模。这些方法提供了推导出一般解决方案的机会,该解决方案作为探针-等离子体系统的响应函数给出。它由适当的动态算子的解析器的矩阵元素定义。基于一般解,可以预测消失压力的残余阻尼,并且只能通过动力学效应来解释。在这份手稿中,推导出了多极共振探头的显式响应函数。所以,解算由其基于正交基函数展开的代数表示确定。这允许计算近似的响应函数及其相应的光谱,由于动力学效应显示额外的阻尼。
更新日期:2020-04-29
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