Abstract

Magnetic reconnection is a universal process in space, astrophysical, and laboratory plasmas. It alters magnetic field topology and results in energy release to the plasma. Here we report the experimental results of a pure electron outflow in magnetic reconnection, which is not accompanied with ion flows. By controlling an applied magnetic field in a laser produced plasma, we have constructed an experiment that magnetizes the electrons but not the ions. This allows us to isolate the electron dynamics from the ions. Collective Thomson scattering measurements reveal the electron Alfvénic outflow without ion outflow. The resultant plasmoid and whistler waves are observed with the magnetic induction probe measurements. We observe the unique features of electron-scale magnetic reconnection simultaneously in laser produced plasmas, including global structures, local plasma parameters, magnetic field, and waves.

Details

Title
Direct observations of pure electron outflow in magnetic reconnection
Author
Sakai, K. 1 ; Moritaka, T. 2 ; Morita, T. 3 ; Tomita, K. 4 ; Minami, T. 1 ; Nishimoto, T. 1 ; Egashira, S. 5 ; Ota, M. 5 ; Sakawa, Y. 5 ; Ozaki, N. 1 ; Kodama, R. 1 ; Kojima, T. 3 ; Takezaki, T. 6 ; Yamazaki, R. 7 ; Tanaka, S. J. 8 ; Aihara, K. 9 ; Koenig, M. 10 ; Albertazzi, B. 10 ; Mabey, P. 10 ; Woolsey, N. 11 ; Matsukiyo, S. 3 ; Takabe, H. 12 ; Hoshino, M. 13 ; Kuramitsu, Y. 1 

 Osaka University, Graduate School of Engineering, Osaka, Japan (GRID:grid.136593.b) (ISNI:0000 0004 0373 3971); Osaka University, Institute of Laser Engineering, Osaka, Japan (GRID:grid.136593.b) (ISNI:0000 0004 0373 3971) 
 National Institute for Fusion Science, Department of Helical Plasma Research, Toki, Japan (GRID:grid.419418.1) (ISNI:0000 0004 0632 3468) 
 Kyushu University, Faculty of Engineering Sciences, Fukuoka, Japan (GRID:grid.177174.3) (ISNI:0000 0001 2242 4849) 
 Hokkaido University, Division of Quantum Science and Engineering, Graduate School of Engineering, Hokkaido, Japan (GRID:grid.39158.36) (ISNI:0000 0001 2173 7691) 
 Osaka University, Institute of Laser Engineering, Osaka, Japan (GRID:grid.136593.b) (ISNI:0000 0004 0373 3971) 
 University of Toyama, Faculty of Engineering, Toyama, Japan (GRID:grid.267346.2) (ISNI:0000 0001 2171 836X) 
 Osaka University, Institute of Laser Engineering, Osaka, Japan (GRID:grid.136593.b) (ISNI:0000 0004 0373 3971); Aoyama Gakuin University, Department of Physical Sciences, Sagamihara, Japan (GRID:grid.252311.6) (ISNI:0000 0000 8895 8686) 
 Osaka University, Graduate School of Engineering, Osaka, Japan (GRID:grid.136593.b) (ISNI:0000 0004 0373 3971); Aoyama Gakuin University, Department of Physical Sciences, Sagamihara, Japan (GRID:grid.252311.6) (ISNI:0000 0000 8895 8686) 
 Aoyama Gakuin University, Department of Physical Sciences, Sagamihara, Japan (GRID:grid.252311.6) (ISNI:0000 0000 8895 8686) 
10  LULI–CNRS, CEA, Sorbonne Universités, École Polytechnique, Institut Polytechnique de Paris, Palaiseau cedex, France (GRID:grid.10877.39) (ISNI:0000000121581279) 
11  University of York, Department of Physics, York Plasma Institute, York, UK (GRID:grid.5685.e) (ISNI:0000 0004 1936 9668) 
12  National Taiwan University, Leung Center for Cosmology and Particle Astrophysics, Taipei, Taiwan (GRID:grid.19188.39) (ISNI:0000 0004 0546 0241) 
13  University of Tokyo, Department of Earth and Planetary Science, Bunkyo, Japan (GRID:grid.26999.3d) (ISNI:0000 0001 2151 536X) 
Publication year
2022
Publication date
2022
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2682581324
Copyright
© The Author(s) 2022. corrected publication 2022. 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.