神光Ⅲ原型单端驱动黑腔等离子体聚心时间研究  

Plasma convergence time of radiation hohlraum with single-end drive on SG-III prototype laser facility

作　　者：曹柱荣[1] 李三伟[1] 江少恩[1] 丁永坤[1] 刘慎业[1] 杨家敏[1] 张海鹰[1] 杨正华[1] 黎航[1] 易荣清[1] 何小安[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》2010年第10期7170-7174,共5页Acta Physica Sinica

基　　金：国家重点基础研究发展计划(批准号:2007CB814802)资助的课题~~

摘　　要：在神光Ⅲ原型装置上,利用8束激光单端驱动半腔靶实验研究了黑腔等离子体聚心时间.通过改变腔底结构建立了4种黑腔辐射源,比较了等离子体径向的聚心时间与黑腔辐射温度的变化关系.径向聚心时间和辐射温度分别由X射线分幅相机和软X射线能谱仪给出.研究发现,4种辐射源的等离子体径向聚心时间与辐射温度之间存在正比关系,聚心时间随辐射温度升高而延后。Plasma convergence time of half-hohlraum target with single-end drive by 8 bundled lasers are researched on SG-III prototype laser facility.Four radiation sources were established by changing the structure of target bottom.The relation between plasma radial convergence time obtained by x-ray framing camera and radiation temperature from soft x-ray spectrometer have been investigated.The results showed that plasma radial convergence time is directly proportional to radiation temperatures on different structures of target bottom,which lengthens as radiation temperature increases.

关 键 词：聚心时间 辐射温度 半腔靶 X射线分幅相机 

分 类 号：O536[理学—等离子体物理]