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New Measure of the Dissipation Region in Collisionless Magnetic ReconnectionA new measure to identify a small-scale dissipation region in collisionless magnetic reconnection is proposed. The energy transfer from the electromagnetic field to plasmas in the electron s rest frame is formulated as a Lorentz-invariant scalar quantity. The measure is tested by two-dimensional particle-in-cell simulations in typical configurations: symmetric and asymmetric reconnection, with and without the guide field. The innermost region surrounding the reconnection site is accurately located in all cases. We further discuss implications for nonideal MHD dissipation.
Document ID
20120013525
Document Type
Reprint (Version printed in journal)
Authors
Zenitani, Seiji (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Hesse, Michael (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Klimas, Alex (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Kuznetsova, Masha (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 26, 2013
Publication Date
May 13, 2012
Publication Information
Publication: Physical Review Letters
Volume: 106
Subject Category
Plasma Physics
Report/Patent Number
GSFC.JA.6471.2012
Distribution Limits
Public
Copyright
Other