Magnetic reconnection driven by electron dynamics

Y. Kuramitsu, T. Moritaka, Y. Sakawa, T. Morita, T. Sano, M. Koenig, C. D. Gregory, N. Woolsey, K. Tomita, H. Takabe, Y. L. Liu, S. H. Chen, S. Matsukiyo, M. Hoshino

研究成果: ジャーナルへの寄稿記事

1 引用 (Scopus)

抄録

Magnetic reconnections play essential roles in space, astrophysical, and laboratory plasmas, where the anti-parallel magnetic field components re-connect and the magnetic energy is converted to the plasma energy as Alfvénic out flows. Although the electron dynamics is considered to be essential, it is highly challenging to observe electron scale reconnections. Here we show the experimental results on an electron scale reconnection driven by the electron dynamics in laser-produced plasmas. We apply a weak-external magnetic field in the direction perpendicular to the plasma propagation, where the magnetic field is directly coupled with only the electrons but not for the ions. Since the kinetic pressure of plasma is much larger than the magnetic pressure, the magnetic field is distorted and locally anti-parallel. We observe plasma collimations, cusp and plasmoid like features with optical diagnostics. The plasmoid propagates at the electron Alfvén velocity, indicating a reconnection driven by the electron dynamics.

元の言語英語
記事番号5109
ジャーナルNature communications
9
発行部数1
DOI
出版物ステータス出版済み - 12 1 2018

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Electrons
Magnetic Fields
Plasmas
electrons
Magnetic fields
magnetic fields
Laser produced plasmas
Pressure
space plasmas
collimation
cusps
laser plasmas
astrophysics
Lasers
Ions
Kinetics
propagation
energy
kinetics
ions

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

これを引用

Kuramitsu, Y., Moritaka, T., Sakawa, Y., Morita, T., Sano, T., Koenig, M., ... Hoshino, M. (2018). Magnetic reconnection driven by electron dynamics. Nature communications, 9(1), [5109]. https://doi.org/10.1038/s41467-018-07415-3

Magnetic reconnection driven by electron dynamics. / Kuramitsu, Y.; Moritaka, T.; Sakawa, Y.; Morita, T.; Sano, T.; Koenig, M.; Gregory, C. D.; Woolsey, N.; Tomita, K.; Takabe, H.; Liu, Y. L.; Chen, S. H.; Matsukiyo, S.; Hoshino, M.

:: Nature communications, 巻 9, 番号 1, 5109, 01.12.2018.

研究成果: ジャーナルへの寄稿記事

Kuramitsu, Y, Moritaka, T, Sakawa, Y, Morita, T, Sano, T, Koenig, M, Gregory, CD, Woolsey, N, Tomita, K, Takabe, H, Liu, YL, Chen, SH, Matsukiyo, S & Hoshino, M 2018, 'Magnetic reconnection driven by electron dynamics', Nature communications, 巻. 9, 番号 1, 5109. https://doi.org/10.1038/s41467-018-07415-3
Kuramitsu Y, Moritaka T, Sakawa Y, Morita T, Sano T, Koenig M その他. Magnetic reconnection driven by electron dynamics. Nature communications. 2018 12 1;9(1). 5109. https://doi.org/10.1038/s41467-018-07415-3
Kuramitsu, Y. ; Moritaka, T. ; Sakawa, Y. ; Morita, T. ; Sano, T. ; Koenig, M. ; Gregory, C. D. ; Woolsey, N. ; Tomita, K. ; Takabe, H. ; Liu, Y. L. ; Chen, S. H. ; Matsukiyo, S. ; Hoshino, M. / Magnetic reconnection driven by electron dynamics. :: Nature communications. 2018 ; 巻 9, 番号 1.
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