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Generalized Ohm's law in a 3‐D reconnection experiment
Author(s) -
Cothran C. D.,
Landreman M.,
Brown M. R.,
Matthaeus W. H.
Publication year - 2005
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2004gl021245
Subject(s) - ohm's law , ohm , physics , magnetic reconnection , quasistatic process , inertia , magnetohydrodynamic drive , magnetohydrodynamics , electrical resistivity and conductivity , resistive touchscreen , electron , plasma , quantum electrodynamics , classical mechanics , quantum mechanics , engineering , electrical engineering
We report the measurement of non‐ideal terms of the generalized Ohm's law at a reconnection site of a weakly collisional laboratory magnetohydrodynamic plasma. Results show that the Hall term dominates the measured terms; resistive and electron inertia terms are small. We suggest that electron pressure (not measured) supports the observed quasistatic reconnection rate, and that anomalous resistivity, while not ruled out, is not required to account for the results.