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The Inner Structure of Collisionless Magnetic Reconnection: The Electron-Frame Dissipation Measure and Hall FieldsIt was recently proposed that the electron-frame dissipation measure, the energy transfer from the electromagnetic field to plasmas in the electron s rest frame, identifies the dissipation region of collisionless magnetic reconnection [Zenitani et al., Phys. Rev. Lett. 106, 195003 (2011)]. The measure is further applied to the electron-scale structures of antiparallel reconnection, by using two-dimensional particle-in-cell simulations. The size of the central dissipation region is controlled by the electron-ion mass ratio, suggesting that electron physics is essential. A narrow electron jet extends along the outflow direction until it reaches an electron shock. The jet region appears to be anti-dissipative. At the shock, electron heating is relevant to a magnetic cavity signature. The results are summarized to a unified picture of the single dissipation region in a Hall magnetic geometry.
Document ID
20120010335
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Zenitani, Seiji (Maryland Univ. College Park, MD, United States)
Hesse, Michael (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Klimas, Alex (Maryland Univ. College Park, MD, United States)
Black, Carrie (Oak Ridge Associated Universities, Inc. Washington, DC, United States)
Kuznetsova, Masha (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 26, 2013
Publication Date
December 14, 2011
Publication Information
Publication: Physics of Plasmas
Volume: 18
Issue: 12
Subject Category
Plasma Physics
Report/Patent Number
GSFC.JA.00305.2012
Distribution Limits
Public
Copyright
Other