强激光与粒子束2025，Vol.37Issue(5)：47-51,5.DOI:10.11884/HPLPB202537.240335
间接驱动双金属壳靶内爆出中子实验研究
Implosion experiment of neutron yield in indirectly driven double-metal-shell target
摘要
Abstract
This paper discusses early experiments on indirect laser-driven implosion of double-metal-shell targets conducted with a hundred-kilojoule-class laser facility.The design of the double-metal-shell target is derived from the volume ignition scheme,which decouples the radiation ablation and implosion compression processes,thereby improving the robustness of the implosion.However,due to the high difficulty in manufacturing the double-metal-shell target,the neutron yield in the initial experiments was much lower than expected from simulations.To address this issue,two key improvements are proposed:first,optimizing the joint design of the outer shell to reduce the impact of hydrodynamic instability,thus to improve the collision efficiency of the inner and outer shells and the implosion efficiency of the inner core;second,enhancing the coupling efficiency of the hohlraum-target to improve the effective transfer of laser energy.With these improvements,the compression performance and implosion efficiency of the target were significantly enhanced,resulting in a substantial increase in neutron yield,from5.0×107 to7.1×108.关键词
体点火/双壳靶/金属壳/接缝/中子产额Key words
volume ignition/double shell target/metal shell/joint/neutron yield分类
物理学引用本文复制引用
丁嘉帆,黎航,蒋炜,景龙飞,林雉伟,郭亮..间接驱动双金属壳靶内爆出中子实验研究[J].强激光与粒子束,2025,37(5):47-51,5.基金项目
国家自然科学基金项目(12105269、12175210) （12105269、12175210）
等离子体物理全国重点实验室基金项目(JCKYS2023212807) （JCKYS2023212807）
