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

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

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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.

self-generated magnetic fieldlaser solid-target interactionmicro-structured plasma grating

严睿、邹德滨、赵娜、杨晓虎、蒋祥瑞、胡理想、徐新荣、周泓宇、余同普、卓红斌、邵福球、银燕

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Northwest Institute of Nuclear Technology,Xi'an 710024,China

Department of Physics,National University of Defense Technology,Changsha 410073,China

School of Microelectronics and Physics,Hunan University of Technology and Business,Changsha 410205,China

Department of Nuclear Science and Technology,National University of Defense Technology,Changsha 410073,China

College of Engineering Physics,Shenzhen Technology University,Shenzhen 518118,China

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国家自然科学基金国家自然科学基金国家自然科学基金湖南省自然科学基金湖南省自然科学基金湖南省自然科学基金湖南省教育厅科研项目湖南省教育厅科研项目

1217531012305268U22412812024JJ61842022JJ200422021JJ4065322B065522A0435

2024

10.1088/1674-1056/ad333f

中国物理B(英文版)
中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI
影响因子：0.995
ISSN：1674-1056
年,卷(期)：2024.33(5)
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