稠密氦气物态方程研究

Study of equation-of-state of dense helium

用二级氢气炮作为冲击压缩加载工具和多通道瞬态辐射高温计作为主要测量系统 ,测量了冲击压缩氦气等离子体的光辐亮度历史 (初始温度 2 93K ,初始压力为 1.2MPa)。根据实测记录信号波形的有关特征量 ,计算得到了氦等离子体的Hugoniot物态方程 (含冲击温度 )。结果发现 :实测Hugoniot物态方程可用Saha方程加Debye Huckel修正物理模型解释。

Hugoniot EOS, shock temperature of gas helium plasma(the initial pressure is 1.2 MPa and the initial temperature is 293 K) are measured with the help of shock compression technique and transient radiation pyrometer. The experimental Hugoniot data are good agreement with the theoretical prediction by Saha equation pus Debye Huckel correction.