Statistics – Computation
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufmsh41c..06p&link_type=abstract
American Geophysical Union, Fall Meeting 2007, abstract #SH41C-06
Statistics
Computation
2723 Magnetic Reconnection (7526, 7835), 7524 Magnetic Fields, 7526 Magnetic Reconnection (2723, 7835), 7831 Laboratory Studies And Experimental Techniques
Scientific paper
Study of reconnection in the toroidal laboratory configuration known as the reversed field pinch reveals numerous features that are likely shared in part by magnetospheric and solar plasmas. In the MST experiment, reconnection is impulsive temporally and global spatially. Multiple, coupled reconnections occur, spread globally throughout the plasma. During a sudden reconnection event, the magnetic energy in the plasma is reduced by about ten percent, while the ion thermal energy increases several-fold (in one hundred microseconds). The reconnections rearrange the magnetic structure and lead to chaotic field line wander. MHD theory and nonlinear computation predicts the occurrence of multiple reconnections (nonlinearly coupled), magnetic energy release and, to some extent, the impulsive onset. But two-fluid Hall effects are measured to be strong as well, as also predicted by theory. Theoretical work is underway to explain the ion heating, which is strongest for heavier ions (as also occurs in the solar wind).
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