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Radiative reverse shock laser experiments relevant to accretion processes in cataclysmic variables

机译：辐射反向冲击激光实验与催化变量的增生过程有关

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摘要

We discuss the production of radiative reverse shocks in experiments at the Omega-60 laser facility. The ability of this high-intensity laser to impart large energy densities on micron-thin foils makes it feasible to create supersonic plasma flows. Obtaining a radiative reverse shock in the laboratory requires a sufficiently fast flow (～100 km/s) of a material whose opacity is large enough to produce energetically significant emission from experimentally achievable shocked layers. The reverse shock forms in the flow once it is impeded. This paper presents the first radiographic data of normal incidence, reverse shockwaves. These experiments are primarily motivated by the contribution of radiative reverse shock waves to the evolving dynamics of the cataclysmic variable (CV) system in which they reside. We show similarity properties to suggest that the experimental production of radiative reserve shocks in the laboratory may be scalable to such astrophysical systems.
机译：我们在Omega-60激光设备的实验中讨论了辐射反向冲击的产生。这种高强度激光在微米级薄箔片上赋予较大能量密度的能力使其可产生超音速等离子体流。要在实验室中获得辐射反向冲击，需要材料的足够快的流量（约100 km / s），其不透明度足以从实验上可达到的冲击层产生能量上显着的发射。一旦气流受阻，就会形成反向冲击。本文介绍了法线入射，反向冲击波的第一个射线照相数据。这些实验的主要动力是辐射反向冲击波对它们所驻留的催化变量（CV）系统不断发展的动力学的贡献。我们显示出相似的性质，表明在实验室中辐射储备冲击的实验产生可能可扩展到诸如天体物理学的系统。

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