强激光与粒子束, 2018, 30 (5): 050101, 网络出版: 2018-05-04  

黑腔LEH堵孔实验研究取得新进展

Experimental study on laser entrance hole closure of hohlraum in ICF
作者单位
1 中国工程物理研究院 激光聚变研究中心, 四川 绵阳 621900
2 北京应用物理与计算数学研究所, 北京 100088
摘要
在神光Ⅲ主机激光装置上,采用单端带激光注入孔(LEH)的桶状黑腔,利用极区分幅相机和极区附近X光条纹相机获得黑腔内壁附近和LEH附近等离子体的X射线发射时空演化图像,进而研究LEH堵孔特性。X光图像清晰地展示了激光光斑移动、LEH附近等离子体缩孔和堵孔过程,为优化LEH尺寸提供了实验依据。
Abstract
On Shenguang Ⅲ laser facility, 32 laser beams were symmetrically injected a gas-filled hohlraum to create plasma situation which is close to the ignition condition. An X-ray framing camera on the polar station and an X-ray streak camera near the pole were utilized to obtain the temporal and spacial evolution X-ray images of the plasma from the hohlraum wall and near the laser entrance hole (LEH), which were used to analyse the LEH closure feature of the hohlraum with various LEH size. The experimental results clearly demonstrated the evolution of laser spot motion, plasma expanding near the LEH and closure of the LEH, which supplied the foundation to optimize the LEH dimension.

李三伟, 郭亮, 李琦, 李欣, 胡昕, 曹柱荣, 侯立飞, 王峰, 杨家敏, 江少恩, 丁永坤, 张保汉. 黑腔LEH堵孔实验研究取得新进展[J]. 强激光与粒子束, 2018, 30(5): 050101. Li Sanwei, Guo Liang, Li Qi, Li Xin, Hu Xin, Cao Zhurong, Hou Lifei, Wang Feng, Yang Jiamin, Jiang Shaoen, Ding Yongkun, Zhang Baohan. Experimental study on laser entrance hole closure of hohlraum in ICF[J]. High Power Laser and Particle Beams, 2018, 30(5): 050101.

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