Optical conductivity of warm dense matter within a wide frequency range using quantum statistical and kinetic approaches.
Optical conductivity of warm dense matter within a wide frequency range using quantum statistical and kinetic approaches.
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DOI：
10.1103/physreve.94.013203
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发表时间：
2016-02
期刊：
影响因子：
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通讯作者：
M. Veysman;G. Röpke;M. Winkel;H. Reinholz
中科院分区：
文献类型：
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作者：
M. Veysman;G. Röpke;M. Winkel;H. Reinholz
热致密物质的基本性质由介电函数描述，介电函数提供了与频率相关的电导率;辐射的吸收，发射和散射;带电粒子停止;以及进一步的宏观性质。不同的方法的介电函数和相关的动力学碰撞频率进行了比较，在一个很宽的频率范围内。被认为是高频限制描述逆韧致辐射和低频限制的直流电导率。检验了广义线性响应理论和动力学理论的标准方法的求和规则和Kramers-Kronig关系。在铝，氙，氩等离子体的应用结果进行了讨论。
Fundamental properties of warm dense matter are described by the dielectric function, which gives access to the frequency-dependent electrical conductivity; absorption, emission, and scattering of radiation; charged particles stopping; and further macroscopic properties. Different approaches to the dielectric function and the related dynamical collision frequency are compared in a wide frequency range. The high-frequency limit describing inverse bremsstrahlung and the low-frequency limit of the dc conductivity are considered. Sum rules and Kramers-Kronig relation are checked for the generalized linear response theory and the standard approach following kinetic theory. The results are discussed in application to aluminum, xenon, and argon plasmas.