强激光与粒子束, 2016, 28 (8): 28080101, 网络出版: 2016-07-26
神光Ⅲ主机装置首次间接驱动内爆集成实验
Initial indirect-driven implosion integrated experiment on Shenguang Ⅲ laser facility
激光间接驱动 集成实验 惯性压缩 中子产额 laser indirect-driven integrated experiment inertial compression neutron yield
摘要
基于新建成的神光Ⅲ主机装置开展了首次激光间接驱动内爆集成实验。国内首次采用多环脉冲整形激光注入黑腔产生X光辐射驱动内爆，通过优化激光打靶参数控制驱动不对称性，演示了以惯性压缩为主、收缩比约15倍的DT靶丸内爆实验能力， 实现了准一维的高静产额(YOC)和高中子产额的物理指标；其中，真空黑腔DT靶丸最高中子产额为1.9×1012，YOC达到60%；充气黑腔DT靶丸最高中子产额为2.4×1012，YOC大约70%。该实验为未来开展多台阶整形辐射驱动、更高倍数收缩比的高压缩内爆综合实验、验证点火靶物理设计和关键调控措施有效性奠定了基础。
Abstract
Initial laser indirect-driven integrated experiment was carried out on the new-established Shenguang Ⅲ laser facility. The shaped laser pulses from multi-rings were injected into a hohlraum and converted to X-ray emissions. According to the control of the drive asymmetry by the optimization of the laser parameter, the quasi one-dimensional imploding performance of DT capsule was demonstrated with the dominant inertial compression and 10-15 convergence ratio. Meanwhile, the physical guide line for high yield over clean (YOC) and high neutron yield was accomplished. For vacuum hohlraum, the highest neutron yield is 1.9×1012 while YOC is about 60%; For hohlraum filled with gas, the highest neutron yield is 2.4×1012 while YOC is about 70%. These experimental results provide a foundation for the imploding integrated experiments with multi-step drive and higher convergence ratio in the near future.
江少恩, 董云松, 黄天晅, 李三伟, 唐琦, 曹柱荣, 杨冬, 杨国洪, 杨正华, 易荣清, 苏春晓, 刘慎业, 杨家敏, 王峰, 杜凯, 何智兵, 朱启华, 胡东霞, 邹士阳, 郑无敌, 葛峰峻, 赵益清, 张桦森, 古培俊, 刘杰, 朱少平, 王建国, 张保汉, 丁永坤. 神光Ⅲ主机装置首次间接驱动内爆集成实验[J]. 强激光与粒子束, 2016, 28(8): 28080101. Jiang Shaoen, Dong Yunsong, Huang Tianxuan, Li Sanwei, Tang Qi, Cao Zhurong, Yang Dong, Yang Guohong, Yang Zhenghua, Yi Rongqing, Su Chunxiao, Liu Shenye, Yang Jiamin, Wang Feng, Du Kai, He Zhibing, Zhu Qihua, Hu Dongxia, Zou Shiyang, Zheng Wudi, Ge Fengjun, Zhao Yiqing, Zhang Huasen, Gu Peijun, Liu Jie, Zhu Shaoping, Wang Jianguo, Zhang Baohan, Ding Yongkun. Initial indirect-driven implosion integrated experiment on Shenguang Ⅲ laser facility[J]. High Power Laser and Particle Beams, 2016, 28(8): 28080101.
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