Kinetic damping in the spectra of the spherical impedance probe
Kinetic damping in the spectra of the spherical impedance probe
复制标题
球形阻抗探头光谱中的动阻尼
DOI：
10.1088/1361-6595/aab745
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发表时间：
2018
影响因子：
3.8
通讯作者：
J. Oberrath
中科院分区：
文献类型：
--
作者：
J. Oberrath
阻抗探头是一种测量等离子体参数（例如电子密度）的测量装置。它由一个通过同轴电缆连接到网络分析仪的电极组成，并浸入等离子体中。将与交流电势叠加的偏置电势施加到电极并测量等离子体的响应。它在静电、动力学描述中与等离子体的动态相互作用可以基于函数分析方法以抽象符号进行建模。这些方法提供了导出通用解决方案的机会，该通用解决方案作为探针-等离子体系统的响应函数给出。它由适当的动力学算子的解析的矩阵元素定义。基于通解，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。本文推导了球形阻抗探头的显式响应函数。因此，解方程由基于正交基函数展开的代数表示确定。这允许人们计算近似响应函数及其相应的光谱。这些光谱显示出由于动力学效应而产生的额外阻尼，并且与以前的动力学确定的光谱非常一致。
The impedance probe is a measurement device to measure plasma parameters, such as electron density. It consists of one electrode connected to a network analyzer via a coaxial cable and is immersed into a plasma. A bias potential superposed with an alternating potential is applied to the electrode and the response of the plasma is measured. Its dynamical interaction with the plasma in an 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. In this paper, an explicit response function of the spherical impedance probe is derived. Therefore, the resolvent is determined by its algebraic representation based on an expansion in orthogonal basis functions. This allows one to compute an approximated response function and its corresponding spectra. These spectra show additional damping due to kinetic effects and are in good agreement with former kinetically determined spectra.
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DOI：
10.1088/0370-1301/70/3/303
发表时间：
1957-01-01
期刊：
PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON SECTION B
影响因子：
--
作者：
ALLEN, JE;BOYD, RLF;REYNOLDS, P
通讯作者：
REYNOLDS, P
DOI：
--
发表时间：
1985
期刊：
影响因子：
--
作者：
O. Popov;V. Godyak
通讯作者：
V. Godyak
非线性各向同性等离子体中的射频探针
影响因子：
1.2
作者：
C. Bantin;K. Balmain
通讯作者：
K. Balmain
非均匀等离子体板中的电子表面波
DOI：
--
发表时间：
1998
期刊：
影响因子：
--
作者：
D. Cooperberg
通讯作者：
D. Cooperberg
在共振探头上
DOI：
--
发表时间：
1966
期刊：
影响因子：
--
作者：
D. Lépéchinsky;A. Messiaen;P. Rolland
通讯作者：
P. Rolland