超快物质区铝的动态电导率和等离子体分布对LCLS最近X射线散射数据的分析
The dynamic conductivity and the plasmon profile of Aluminum in the ultra-fast-matter regime; an analysis of recent X-ray scattering data from the LCLS
摘要：
我们使用一个明确的等容双温度理论，离子温度不被假定为等于电子温度，分析最近的X射线激光散射数据铝在超快物质（UFM）制度高达6 eV，在斯坦福直线加速器相干光源（LCLS）。观察到的令人惊讶的低电导率可以通过使用密度函数中性伪原子模型（NPA）计算的相移包括强电子-离子散射效应来解释。Mermin模型对UFM的适用性受到质疑。静态和动态的电导率，复杂的碰撞频率和等离子体激元线形内玻恩近似和不使用的Mermin响应进行评估。这种方法，其中所有需要的数量从NPA模型，提供了良好的协议与报道的实验结果。
英文摘要：
We use an explicitly isochoric two-temperature theory where the ion temperature is not assumed to be equal to the electron temperature, to analyze recent X-ray laser scattering data for Aluminum in the ultra-fast-matter (UFM) regime up to 6 eV, obtained at the Standford Linac Coherent Light Source (LCLS). The observed surprisingly low conductivities are explained by including strong electron-ion scattering effects using the phase shifts calculated via the density-functional neutral-pseudo-atom model (NPA). The applicability of the Mermin model to UFM is questioned. The static and dynamic conductivity, complex collision frequency and the plasmon line-shape are evaluated within a Born approximation and without the use of the Mermin response. This approach, where all needed quantities are obtained from the NPA model, provides good agreement with the reported experimental results.
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