Model of self-generated magnetic field generation from relativistic laser interaction with solid targets

被引:2
|
作者
Yan, Rui [1 ]
Zou, De-Bin [2 ]
Zhao, Na [3 ]
Yang, Xiao-Hu [4 ]
Jiang, Xiang-Rui [2 ]
Hu, Li-Xiang [2 ]
Xu, Xin-Rong [2 ]
Zhou, Hong-Yu [2 ]
Yu, Tong-Pu [2 ]
Zhuo, Hong-Bin [5 ]
Shao, Fu-Qiu [2 ]
Yin, Yan [2 ]
机构
[1] Northwest Inst Nucl Technol, Xian 710024, Peoples R China
[2] Natl Univ Def Technol, Dept Phys, Changsha 410073, Peoples R China
[3] Hunan Univ Technol & Business, Sch Microelect & Phys, Changsha 410205, Peoples R China
[4] Natl Univ Def Technol, Dept Nucl Sci & Technol, Changsha 410073, Peoples R China
[5] Shenzhen Technol Univ, Coll Engn Phys, Shenzhen 518118, Peoples R China
基金
中国国家自然科学基金;
关键词
self-generated magnetic field; laser solid-target interaction; micro-structured plasma grating; 52.38.Fz; 52.38.-r; 42.79.Dj; ION-ACCELERATION; PULSE; PLASMAS; DRIVEN; WAVES;
D O I
10.1088/1674-1056/ad333f
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Generation of self-generated annular magnetic fields at the rear side of a solid target driven by relativistic laser pulse is investigated by using theoretical analysis and particle-in-cell simulations. The spatial strength distribution of magnetic fields can be accurately predicted by calculating the net flow caused by the superposition of source flow and return flow of hot electrons. The theoretical model established shows good agreement with the simulation results, indicating that the magnetic-field strength scales positively to the temperature of hot electrons. This provides us a way to improve the magnetic-field generation by using a micro-structured plasma grating in front of the solid target. Compared with that for a common flat target, hot electrons can be effectively heated with the well-designed grating size, leading to a stronger magnetic field. The spatial distribution of magnetic fields can be modulated by optimizing the grating period and height as well as the incident angle of the laser pulse.
引用
收藏
页数:7
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