时间分辨晶体谱仪在Z箍缩等离子体中的应用  

Application of time-resolved crystal spectrometer in Z-pinch plasmas

作　　者：蔡红春[1] 黄显宾[1] 段书超[1] 李晶[1] 周少彤[1] 张思群[1] 

机构地区：[1]中国工程物理研究院流体物理研究所,脉冲功率科学与技术实验室,四川绵阳621900

出　　处：《强激光与粒子束》2013年第9期2385-2388,共4页High Power Laser and Particle Beams

基　　金：国家自然科学基金重点项目(11135007)

摘　　要：在装置"阳"加速器上,使用椭圆弯晶谱仪对Al丝阵Z箍缩实验的X射线辐射特性进行了研究。在谱仪结构中,使用椭圆面的晶体作为分光元件,采用PIN阵列作为记录元件实现时间分辨测量,同时用成像板记录时间积分结果。在Al丝阵Z箍缩实验中,获得了时间分辨的Al等离子体K壳层辐射谱,用基于"碰撞-辐射"模型的K壳层线辐射谱分析程序对Al丝阵Z箍缩的实验数据进行了分析,获得了Al丝阵等离子体的时间分辨的电子温度和时空平均的电子数密度参数。A time-resolved crystal spectrometer has been fabricated for the study of X-ray radiations from Z-pinch plasma on Yang accelerator.In the spectrometer,an elliptical crystal is used as light splitting element,a ten-channel PIN array is employed to record time-resolved spectral images,and at the same time imaging plate（IP） is used to record time-integral results.The spectrometer has been used in Z-pinch experiments performed on Yang accelerator.The spectra of K-shell lines are observed,when using Al wire arrays as Z-pinch loads.Computer program ZSPEC based on the collisional-radiative model has been used to analyze the experimental data.According to the line ratios of Hα/Heα and I.C./Heα,the averaged space and time electron density,and time-resolved electron temperature are obtained.

关 键 词：晶体谱仪 时间分辨 Z箍缩 K壳层辐射 

分 类 号：O434.13[机械工程—光学工程] O536[理学—光学]