激光等离子体类氖GeX射线吸收谱研究  

X-RAY ABSORPTION SPECTROSCOPY OF NEON - LIKE GERMANIUM INOS IN LASER-PRODUCED PLASMAS

作　　者：王柳水 林尊琪 章辉煌 何兴法 盛家田[1] 张国平[1] 王东君 林康春 管富义 王笑琴 凌鸣逸 韦小春 侯氢[1] 李家明[1] 

机构地区：[1]北京应用物理与计算数学研究所,上海高功率激光物理联合实验室,中国科学院物理研究所

出　　处：《强激光与粒子束》1994年第2期187-192,共6页High Power Laser and Particle Beams

摘　　要：在国际上首次进行了空间分辨的激光等离子体类氖ＧｃＸ射线吸收谱研究．实验在高功率激光物理联合实验室的神光六路装置上进行，采用新颖的“点投影（ｐｏｉｎｔｐｒｏｊｅｃｔｉｏｎ）”吸收谱方案，研究了激光脉冲峰值以后２００ｐｓ时刻Ｇｅ等离子体中类氖离子密度的空间分布特性（空间分辨约２４μｍ），结果获得了类氖Ｇｅ２ｐ－３ｄ的共振吸收谐信号。实验结果同国内一维流体力学ＪＢ１９编码的模拟结果进行了比较。In this work we have developed and successfully demonstrated the“point projec-tion absorption spectroscopy(PPAS)’technique to record keV absorption spectra in coronalregions of laser produced germanium plasmas which provides spatial information in coronas withnresolusion of～24μm and can freeze the motion of the expanding plasmas at the ≈ 25ps level.The 1-D hydrocode JB19 have been used to simulate the experiment in plannar geometry over arange of intensity,and the predictions are compared to the observations.Such comparison can beuseful in validating parts of the codes used for gain predictions of soft X-ray laser transitions.

关 键 词：激光等离子体 X射线吸收谱 X光激光 

分 类 号：TN241[电子电信—物理电子学]