Physics – Plasma Physics
Scientific paper
Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsm23c..07g&link_type=abstract
American Geophysical Union, Fall Meeting 2008, abstract #SM23C-07
Physics
Plasma Physics
2753 Numerical Modeling, 7829 Kinetic Waves And Instabilities, 7835 Magnetic Reconnection (2723, 7526), 7839 Nonlinear Phenomena (4400, 6944)
Scientific paper
Laboratory reconnection experiments [1] and recent magnetospheric spacecraft observations [2] are beginning to find bipolar fields with a spatial half-width equal to many Debye lengths (10 or more) traveling at high speeds (faster than the thermal velocity of the bulk of electrons). Electron phase-space hole solutions of the nonlinear Poisson-Vlasov equations (stationary in a frame co-moving with the hole) are constructed analytically with these properties by assuming there is secondary component of the electron distribution. This component can be a tail on the electron distribution or a beam. The hole velocity will be close to the velocity at the end of the tail or the velocity of the beam, provided the ions are moving with sufficient velocity in the frame of the hole. Vlasov simulations are used to study accessibility and stability of these solutions. * Work supported by DOE, NASA, and NSF [1]W. Fox, M. Porkolab, J. Egedal, N. Katz, A. Le, and A. Vrublevskis, "Observation of electron phase-space holes during magnetic reconnection in the Versatile Toroidal Facility," Abstract GP6.00029, 50th Annual Meeting of the Division of Plasma Physics, American Physical Society (Dallas, Nov.~2008). [2] R. E. Ergun and J. Tao, private communication.
Goldman Martin V.
Newman D. L.
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