摘要
在神光Ⅱ装置上,8路激光注入金柱腔靶产生X射线驱动位于柱腔中心的DD靶丸内爆,第9路激光辐照Pd背光靶产生的L线X射线透视内爆靶丸,用针孔成像方式获得靶丸的透视图像,高速X射线条纹相机记录靶丸透视图像,建立了间接驱动内爆靶丸背光照相的实验方法,清晰地观测到了靶丸内爆的过程,对透视图像分析获得了内爆靶丸壳层运动轨迹和速度的实验数据,所获实验结果可用于间接驱动靶丸优化设计,还可用于内爆动力学数值模拟建模和计算结果的验证。
Eight beams of 351 nm laser entered the gold hohlraum through the laser entrance holes at Shenguang Ⅱ laser facility,and created X-rays to drive the DD capsule centered in the hohlraum to implode.The 9th beam of laser at 526.5 nm irradiated Pd backlighter foil,and generated a large area Pd L-shell X-ray backlighter to radiograph the implosion capsule.The radiographic image of the implosion capsule was recorded using an X-ray streak camera with a 20 ps time resolution.The X-ray backlighting radiography technique for the implosion capsule was established,and the imploding capsule was observed distinctly in the experiment.Experimental results of the trajectory and the implosion velocity of the capsule were presented,which can provide important information for the optimization design of implosion capsule,and can be used to validate the simulation of indirectly driven implosion of the capsule.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2011年第12期3333-3337,共5页
High Power Laser and Particle Beams
基金
国家高技术发展计划项目
关键词
惯性约束聚变
背光照相
内爆
X射线
inertial confinement fusion
backlighting radiography
implosion
X-ray
