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

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish
Article number5109
JournalNature communications
Volume9
Issue number1
DOIs
Publication statusPublished - Dec 1 2018

Fingerprint

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)

Cite this

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.

In: Nature communications, Vol. 9, No. 1, 5109, 01.12.2018.

Research output: Contribution to journalArticle

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, vol. 9, no. 1, 5109. https://doi.org/10.1038/s41467-018-07415-3
Kuramitsu Y, Moritaka T, Sakawa Y, Morita T, Sano T, Koenig M et al. Magnetic reconnection driven by electron dynamics. Nature communications. 2018 Dec 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. In: Nature communications. 2018 ; Vol. 9, No. 1.
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