多种腔靶中的金M带辐射测量  

Measurement of Au M-band Emission in Various Hohlraums

作　　者：杜华冰[1] 李三伟[1] 刘慎业[1] 李朝光[1] 何小安[1] 于瑞珍[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：《核电子学与探测技术》2013年第7期834-838,共5页Nuclear Electronics & Detection Technology

摘　　要：利用2009年神光Ⅱ黑腔实验的数据,比较了不同腔靶中的金M带X光能量及发射时间过程。在实验中使用滤片选通的X光探测器在激光注入口方向测量到金M带时间过程,通过时间定标获得了可与激光时间过程相关联的金M带X光的发射时间行为。根据实验结果计算了辐射能量,结果表明:随着腔体尺寸的减小,激光能量转换到M带能量的份额也越多;随着激光能量的有限增加,对于大尺寸腔靶,Au的M带辐射量比较稳定,而对于标准腔靶和小尺寸靶,M带的能量会随之增加。The evolution of gold M - band emission from different size of hohlraums was measured on Shenguang Ⅱ laser facility. A band - pass x - ray detector consisted of a compound filter and a Al - cathode XRD was used to measure the intensity of M - band x - rays, and the temporal evolution of M band intensity was compared with the incident laser. The experimental observation indicates that higher energy conversion efficiency of laser to M - band x - ray was obtained by using small hohlraum, the M - band energy increased with the heating laser en- ergy for both standard hohlraum and half hohlraum and up to a constant for large hohlraum.

关 键 词：金M带 X射线二极管 黑腔 转换效率 

分 类 号：O536[理学—等离子体物理]