Rodríguez R, Espinosa G, Gil J M, Stehlé C, Suzuki-Vidal F, Rubiano J G, Martel P, Mínguez E
Departamento de Física, Universidad de Las Palmas de Gran Canaria, 35003 Las Palmas de Gran Canaria, Las Palmas, Spain.
Instituto de Fusión Nuclear, Universidad Politécnica de Madrid, 28040 Madrid, Spain.
Phys Rev E Stat Nonlin Soft Matter Phys. 2015 May;91(5):053106. doi: 10.1103/PhysRevE.91.053106. Epub 2015 May 28.
This work is divided into two parts. In the first one, a study of radiative properties (such as monochromatic and the Rosseland and Planck mean opacities, monochromatic emissivities, and radiative power loss) and of the average ionization and charge state distribution of xenon plasmas in a range of plasma conditions of interest in laboratory astrophysics and extreme ultraviolet lithography is performed. We have made a particular emphasis in the analysis of the validity of the assumption of local thermodynamic equilibrium and the influence of the atomic description in the calculation of the radiative properties. Using the results obtained in this study, in the second part of the work we have analyzed a radiative shock that propagated in xenon generated in an experiment carried out at the Prague Asterix Laser System. In particular, we have addressed the effect of plasma self-absorption in the radiative precursor, the influence of the radiation emitted from the shocked shell and the plasma self-emission in the radiative precursor, the cooling time in the cooling layer, and the possibility of thermal instabilities in the postshock region.
这项工作分为两部分。在第一部分中，对实验室天体物理学和极紫外光刻感兴趣的一系列等离子体条件下氙等离子体的辐射特性（如单色、罗斯兰和普朗克平均不透明度、单色发射率和辐射功率损失）以及平均电离和电荷态分布进行了研究。我们特别强调了对局部热力学平衡假设的有效性分析以及原子描述在辐射特性计算中的影响。利用本研究获得的结果，在工作的第二部分中，我们分析了在布拉格阿斯特里克斯激光系统进行的实验中在氙中传播的辐射激波。特别是，我们探讨了辐射前驱体中等离子体自吸收的影响、激波壳层发射的辐射和辐射前驱体中等离子体自发射的影响、冷却层中的冷却时间以及激波后区域热不稳定性的可能性。
