Particle-in-cell simulations of low-β magnetic reconnection driven by laser interaction with a capacitor–coil target

作     者：原晓霞 周沧涛 张华 李然 平永利 仲佳勇 Xiaoxia Yuan;Cangtao Zhou;Hua Zhang;Ran Li;Yongli Ping;Jiayong Zhong

作者机构：Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material TechnologyCenter for Advanced Material Diagnostic Technologyand College of Engineering PhysicsShenzhen Technology UniversityShenzhen 518118China Department of AstronomyBeijing Normal UniversityBeijing 100875China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2023年第32卷第5期

页      面：413-420页

核心收录：

学科分类：071011[理学-生物物理学] 0710[理学-生物学] 07[理学] 

基　　金：the National Natural Science Foundation of China (Grant No. 11875092) 

主　　题：magnetic reconnection intense laser low-βplasma 

摘      要：The dynamics of low-β magnetic reconnection(MR) driven by laser interaction with a capacitor–coil target are reexamined by simulations in this paper. We compare two cases MR and non-MR(also referred as AP-case and P-case standing for the anti-parallel and parallel magnetic field lines, respectively) to distinguish the different characteristics between *** find that only in the AP-case the reconnection electric field shows up around the X line and the electron jet is directed toward the X line. The quadruple magnetic fields exist in both cases, however, they distribute in the current sheet area in the AP-case, and out of the squeezing area in the P-case, because electrons are demagnetized in the electron diffusion region in the MR process, which is absent in the P-case. The electron acceleration is dominant by the Fermi-like mechanism before the MR process, and by the reconnection electric field when the MR occurs. A power-law electron energy spectrum with an index of 1.8 is found in the AP-case. This work proves the significant potential of this experimental platform to be applied in the studies of low-β astronomy phenomena.