光子计数型CCD测量激光等离子体X射线  

Measurement of X ray in interaction of laser plasmas by photon counting CCD

作　　者：熊勇[1] 黄文忠[1] 张双根[1] 谷渝秋[1] 温天舒[1] 何颖玲[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,四川绵阳621900

出　　处：《强激光与粒子束》2007年第2期271-273,共3页High Power Laser and Particle Beams

基　　金：国家自然科学基金资助课题(10275056);国防科技重点实验室基金资助课题(51480010104ZS7702)

摘　　要：介绍了光子计数型电荷耦合器件（CCD）的工作原理，标定了2．0～30keV的探测效率。在超强超短激光等离子体相互作用中，实验用靶为复合靶，分别用Cu＋Mo和Al＋Cu制作。第1层靶是Cu或Al物质作为电子示踪材料，第2层靶是Mo或Cu物质作为荧光材料，利用光子计数型CCD测量了Mo和Cu的X射线能谱，同时得到CCD的能量分辨率大于37。该CCD可用于激光等离子体低通量高能X射线测量实验。A new technique of single-photon counting X-ray CCD was presented. The detection efficiency in the range from 2 keV to 30 KeV was characterized by several X-ray sources. In the interaction of laser plasmas, the layered targets were chosen consisting of 0. 1 μm Cu layer coated with 50 μm Mo layer and 0.5 μm AI layer coated with 50 μm Cu layer, and the K. spectra with the Mo layer and the Cu layer were obtained and the results show that the energy resolution of CCD is more than 37.

关 键 词：CCD 探测效率 X射线测量 激光等离子体 

分 类 号：O434.12[机械工程—光学工程]