Matter and Radiation at Extremes, Volume. 1, Issue 5, 249(2016)

Generation of a sharp density increase in radiation transport between high-Z and low-Z plasmas

Guangwei Meng1, Jianguo Wang1、*, Xuerong Wang1, Jinghong Li1,2, and Weiyan Zhang3
Author Affiliations
  • 1Institute of Applied Physics and Computational Mathematics, Beijing 10094, China
  • 2Laboratory of Computational Physics, Beijing 100088, China
  • 3National Hi-Tech Inertial Confinement Fusion Committee of China, Beijing 100088, China
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    A sharp density increase (referred to as density incrustation) of the Au plasmas in the radiative cooling process of high-Z Au plasmas confined by low-Z CH plasmas is found through the radiative hydrodynamic simulations. The temperature of Au plasmas changes obviously in the cooling layer while the pressure remains constant. Consequently, the Au plasmas in the cooling layer are compressed, and the density incrustation is formed. It is also shown that when the high-Z plasma opacity decreases or the low-Z plasma opacity increases, the peak density of the density incrustation becomes lower and the thickness of the density incrustation becomes wider. This phenomenon is crucial to the RayleigheTaylor instability at the interface of high-Z and low-Z plasmas, since the density variation of Au plasmas has a considerable influence on the Atwood number of the interface.

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    Guangwei Meng, Jianguo Wang, Xuerong Wang, Jinghong Li, Weiyan Zhang. Generation of a sharp density increase in radiation transport between high-Z and low-Z plasmas[J]. Matter and Radiation at Extremes, 2016, 1(5): 249

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    Paper Information

    Category: Research Article

    Received: Apr. 1, 2016

    Accepted: Aug. 10, 2016

    Published Online: May. 9, 2017

    The Author Email: Wang Jianguo (wang_jianguo@iapcm.ac.cn)

    DOI:10.1016/j.mre.2016.09.001

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