物理学报Issue(12)：1-7,7.DOI:10.7498/aps.63.125205
针对神光II升级装置的直接驱动快点火集成实验靶的初步设计
Preliminary target design for integrated direct-drive fast ignition exp eriments on Shenguang-I I upgrade facility
田超 1单连强 2周维民 1高喆 1谷渝秋 3张保汉1
作者信息
- 1. 中国工程物理研究院激光聚变研究中心，等离子体物理重点实验室，绵阳 621900
- 2. 清华大学工程物理系，北京 100084
- 3. 清华大学工程物理系，北京 100084
- 折叠
摘要
Abstract
The laser energy will be increased substantially when the Shenguang-II laser facility upgrade is completed and the petawatt picosecond laser beam will be equipped at the same time. For the fast ignition approach, direct-drive implosions have some advantages over indirect-drive ones, such as higher energy efficiency and lower mixing of cone material into fuel. Based on Shenguang-II upgraded laser facility, integrated direct-drive fast ignition experiments will be carried out and it will contribute to the further understanding of the relevant physics such as integrated coupling efficiency. The radiation hydrodynamic code Multi1D is used to design fast-ignition targets, and the optimized target parameters are achieved. The optimized target has a relatively thick wall (35 µm) and 420 µm-outer-radius CH shell, which are consistent with the scaling laws in target design. The deposition in the optimization target of the hot electrons generated by the picosecond petawatt pulse is also calculated according to the hot electrons scaling relation. The results show that the achieved areal density is high enough to stop the hot electrons.关键词
神光II升级装置/直接驱动快点火/靶尺寸设计Key words
Shenguang-II upgraded facility/direct-drive fast ignition/target design引用本文复制引用
田超,单连强,周维民,高喆,谷渝秋,张保汉..针对神光II升级装置的直接驱动快点火集成实验靶的初步设计[J].物理学报,2014,(12):1-7,7.
