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arXiv 0706.3572physics.plasm-phphysics.gen-ph
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稠密等离子体的量子统计状态方程模型:高压Hugoniot激波管

Quantum-statistical equation-of-state models of dense plasmas: high-pressure Hugoniot shock adiabats

Jean-Christophe Pain

摘要:

我们提出了一个详细的比较两个自洽的状态方程模型,其不同的电子的贡献:原子在一个球形细胞和原子在一个果冻的电荷。结果表明,这两种模型都适用于高压范围(1 Mbar-10 Gbar)的Hugoniot冲击波的计算,而Atom-in-a-jeltron模型提供了一种更好的压力电离处理方法。与实验数据的比较。本文根据这些模型评述了壳效应对激波管的影响。它们不仅导致压力与密度的变化,而且还导致激波速度与粒子速度的变化。此外,这种效果被发现是负责的电子比热的增强。

英文摘要:

We present a detailed comparison of two self-consistent equation-of-state models which differ from their electronic contribution: the atom in a spherical cell and the atom in a jellium of charges. It is shown that both models are well suited for the calculation of Hugoniot shock adiabats in the high pressure range (1 Mbar-10 Gbar), and that the atom-in-a-jellium model provides a better treatment of pressure ionization. Comparisons with experimental data are also presented. Shell effects on shock adiabats are reviewed in the light of these models. They lead to additional features not only in the variations of pressure versus density, but also in the variations of shock velocity versus particle velocity. Moreover, such effects are found to be responsible for enhancement of the electronic specific heat.

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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