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arXiv 1702.00680physics.plasm-ph
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XUV/X射线自由电子激光产生暖致密物质和强耦合等离子体背景下的原子布居动力学

Atomic population kinetics in the context of XUV/X-ray free electron laser generating warm dense matter and strongly coupled plasmas

Y. J. Aouad, F. B. Rosmej, A. V. Demura, V. S. Lisitsa

摘要:

本文提出用密度矩阵方法计算稠密等离子体(即热稠密物质和强耦合等离子体)中自电离态的原子光谱性质。这是由于在计算自电离态的原子布居数时考虑等离子体电荷成分产生的微电场的影响的重要性。对于自电离态,电子密度证明统计方法超过固体密度带来严重的怀疑,即使在致密的等离子体的统计方法。这也导致标准方法框架中的谱线形状的变化。讨论了X射线自由电子激光(XFEL)与固体密度物质相互作用产生的致密等离子体辐射的重要性。

英文摘要:

In the present paper we propose the use of desnity matrix formalism for the calculation of the atomic spectroscopic properties of autoionizing states in dense plasmas, i.e. warm dense matter and strongly coupled plasmas. This is motivated by the importance of taking into account the effect of the electric microfield generated by the plasma charge constituents in the calculation of the atomic populations of autoionizing states. For autoionizing states, electron densities justifying the statistical approach exceed solid density bringing serious doubts to the statistical approach even in dense plasmas. This leads also to the change of the spectral line shapes in the frame of the standard methods. We discuss the importance of the present analysis in view of the radiation emission originating from dense plasmas created by the interaction of the X-ray Free Electron Lasers (XFEL) with solid density matter.

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