神光Ⅱ上柱形黑腔辐射驱动冲击波  

Shock wave driven by x-ray radiation from cylindrical hohlraum on Shenguang Ⅱ laser

作　　者：江少恩[1] 李文洪[1] 孙可煦[1] 蒋小华[1] 刘永刚[1] 崔延莉[1] 陈久森[1] 丁永坤[1] 郑志坚[1] 

机构地区：[1]中国工程物理研究院激光聚变研究中心,绵阳621900

出　　处：《物理学报》2004年第10期3424-3428,共5页Acta Physica Sinica

基　　金：国家高技术研究发展计划 (批准号 :863 -80 4-3 )资助的课题~~

摘　　要：利用神光Ⅱ的八路三倍频激光装置 ,驱动柱形黑腔产生的x射线作辐射源驱动台阶铝样品产生冲击波 ,获得了清晰的冲击波图像 ,通过冲击波过台阶样品的时间差获得冲击波速度和压力分别为 31 2km s和 17 5× 10 5MPa .A high Z cylindrical hohlraum was used to produce x-ray radiation flux, which was used to drive shock waves in an Al step sample. The radiation temperature is 155eV. Experiments were carried ont on `Shenguang II' laser facility, with eight 250J, 0.35μm wavelength, 1ns Gaussian laser pulses. The planar and preheat-free shock wave was generated and a clear image of shock and preheat wave was obtained. The shock wave velocity and pressure was 31.2km/s and 17.5×10^(11)Pa, respectively. The radiation temperature measured by streaked pyrometer, was consistent with that measured with a soft x-ray spectrometer which views through the laser entrance hole.

关 键 词：高压物理学 惯性约束聚变 冲击波 辐射驱动 辐射温度 

分 类 号：O432.19[机械工程—光学工程]