摘要
A hot-electron driven scheme can be more effective than a laser-driven scheme within suitable hot-electron energy and target density. In our one-dimensional (1D) radiation hydrodynamic simulations, 20× pressure enhancement was achieved when the ignitor laser spike was replaced with a 60-keV hot-electron spike in a shock ignition target designed for the National Ignition Facility (NIF), which can lead to greater shell velocity. Higher hot-spot pressure at the deceleration phase was obtained owing to the greater shell velocity. More cold shell material is ablated into the hot spot, and it benefits the increases of the hot-spot pressure. Higher gain and a wider ignition window can be observed in the hot-electron-driven shock ignition.
作者
尚万里
车兴森
孙奥
杜华冰
杨国洪
韦敏习
侯立飞
杨轶濛
张文海
涂绍勇
王峰
何海恩
杨家敏
江少恩
张保汉
Wan-Li Shang;Xing-Sen Che;Ao Sun;Hua-Bing Du;Guo-Hong Yang;Min-Xi Wei;Li-Fei Hou;Yi-Meng Yang;Wen-Hai Zhang;Shao-Yong Tu;Feng Wang;Hai-En He;Jia-Min Yang;Shao-En Jiang;Bao-Han Zhang(Research Center of Laser Fusion,China Academy of Engineering Physics,Mianyang 621900,China)
基金
Project supported by the National Natural Science Foundation of China(Grant No.11775203)
the Presidential Foundation of China Academy of Engineering Physics(Grant No.YZJJLX 2016007).