Abstract

Dynamic mitigation for the tearing mode instability in the current sheet in collisionless plasmas is demonstrated by applying a wobbling electron current beam. The initial small amplitude modulations imposed on the current sheet induce the electric current filamentation and the reconnection of the magnetic field lines. When the wobbling or oscillatory motion is added from the electron beam having a form of a thin layer moving along the current sheet, the perturbation phase is mixed and consequently the instability growth is saturated remarkably, like in the case of the feed-forward control.

Details

Title
Dynamic mitigation of the tearing mode instability in a collisionless current sheet
Author
Yan-Jun, Gu 1 ; Kawata Shigeo 2 ; Bulanov, Sergei V 3 

 Osaka University, Institute of Laser Engineering, Suita, Japan (GRID:grid.136593.b) (ISNI:0000 0004 0373 3971); ELI-Beamlines, Institute of Physics of the ASCR, Prague, Czech Republic (GRID:grid.494603.c) 
 Utsunomiya University, Graduate School of Engineering & Graduate School of Regional Development and Creativity, Utsunomiya, Japan (GRID:grid.267687.a) (ISNI:0000 0001 0722 4435) 
 ELI-Beamlines, Institute of Physics of the ASCR, Prague, Czech Republic (GRID:grid.494603.c); National Institutes for Quantum and Radiological Science and Technology, Kansai Photon Science Institute, Kizugawa-shi, Japan (GRID:grid.482503.8) (ISNI:0000 0004 5900 003X) 
Publication year
2021
Publication date
2021
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2536110265
Copyright
© The Author(s) 2021. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.