东篱科研大数据发现系统（DRDS）

位置：成果数据库 > 期刊 > 期刊详情页

Effect of inner-surface roughness of conical target on laser absorption and fast electron generation

ISSN号：1674-1056
期刊名称：《中国物理B：英文版》
时间：0
分类：TL632.1[核科学技术—核技术及应用] TG84[金属学及工艺—公差测量技术]
作者机构：[1]Center for Applied Physics and Technology, Peking University, Beijing 100871, China, [2]Key Laboratory of High Energy Density Physics Simulation of the Ministry of Education, Peking University, Beijing 100871, China, [3]Institute of Applied Physics and Computational Mathematics, Beiiing 100088, China, [4]Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900, China, [5]Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027, China, [6]Institute for Theoretical Physics L Ruhr University, Bochum D44780, Germany
相关基金：Project supported by the National Natural Science Foundation of China （Grant Nos. 11175030, 11175029, 91230205, and 11375032）, the National High-Tech ICF Committee of China, the National Basic Research Program of China （Grant Nos. 2008CB717806 and 2011CB808104）, and the Science and Technology Foundation of China Academy of Engineering Physics （Grant No. 2011 A0102008）.

作者：王欢[1,2], 曹莉华[1,2,3], 赵宗清[4], 郁明阳[5,6], 谷渝秋[4], 贺贤土[1,2,3,5]

关键词：表面粗糙度, 锥形, 激光吸收, 子代, 超热电子, 能量范围, 相互作用, 光反射率, inner-surface roughness of cone target, particle-in-cell simulation, vacuum-heating model, laserreflection

中文摘要：

The effect of inner-surface roughness of conical targets on the generation of fast electrons in the laser–cone interaction is investigated using particle-in-cell simulation. It is found that the surface roughness can reduce the fast-electron number(in the energy range E > 1 MeV) and energy, as compared to that from a cone with smooth inner wall. A scaling law for the laser reflectivity based on the vacuum-heating model is derived. Both theory and simulation indicate that laser reflection increases with the height-to-width ratio of the periodic inner surface structure and approaches that of a smooth cone as this ratio becomes zero.

英文摘要：

The effect of inner-surface roughness of conical targets on the generation of fast electrons in the laser-cone interaction is investigated using particle-in-cell simulation. It is found that the surface roughness can reduce the fast-electron number （in the energy range E 〉 1 MeV） and energy, as compared to that from a cone with smooth inner wall. A scaling law for the laser reflectivity based on the vacuum-heating model is derived. Both theory and simulation indicate that laser reflection increases with the height-to-width ratio of the periodic inner surface structure and approaches that of a smooth cone as this ratio becomes zero.

同期刊论文项目