A simple method to verify the opacity and equation of state of high-Z plasmas

被引：10

作者：

Meng, Guangwei ^{[1
,2
]}

Li, Jinghong ^{[1
,3
]}

Yang, Jiamin ^{[4
]}

Zhu, Tuo ^{[4
]}

Zou, Shiyang ^{[1
]}

Wang, Min ^{[1
]}

Zhang, Weiyan ^{[5
]}

机构：

[1] Inst Appl Phys & Computat Math, Beijing 10094, Peoples R China

[2] China Acad Engn Phys, Grad Sch, Beijing 10088, Peoples R China

[3] Lab Computat Phys, Beijing 100088, Peoples R China

[4] Res Ctr Laser Fus, Mianyang 621900, Peoples R China

[5] Natl Hitech Inertial Confinement Fus Comm China, Beijing 100088, Peoples R China

来源：

PHYSICS OF PLASMAS | 2013年 / 20卷 / 09期

基金：

中国国家自然科学基金;

关键词：

X-RAY BURNTHROUGH; RADIATION; DRIVE; AU; TARGETS;

D O I：

10.1063/1.4821836

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Accurate opacity and equation of state (EOS) data are important parameters for reliable modeling and understanding many phenomena of high energy density physics. However, they are difficult to obtain either theoretically or experimentally especially for high-Z plasmas. In this paper, we proposed a simple method to verify the opacity and EOS of high-Z plasmas in rarefactive states, which is build on the two key aspects of ablation processes, i.e., the propagation of heatwave into materials and the hydrodynamic expansion of the blow-off plasmas. Based on the integrated analysis of the Au foil burnthrough and foam-confined plasma expansion experiments performed on the Shenguang II and Shenguang III prototype laser facilities, we suggested two semi-empirical multipliers to adjust the opacity and EOS of Au plasma. These adjusted opacity and EOS may then provide a foundation for other radiation hydrodynamic simulations under similar drive conditions. (C) 2013 AIP Publishing LLC.

引用

页数：7

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