摘要
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 Ray-leigheTaylor 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.
基金
This work was supported by the National Basic Research Program of China(Grant No.2013CB922200)
the National Natural Science Foundation of China(Grant No.11025417 and 11405010)
the Science and Technology Developing Foundation of CAEP(Grant no.2013B0102016).
