Coupled Reconnection Sites and Magnetic Energy Release in a Laboratory Plasma

Details Coupled Reconnection Sites and Magnetic Energy Release in a Laboratory Plasma Coupled Reconnection Sites and Magnetic Energy Release in a Laboratory Plasma

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsm13c..03p&link_type=abstract

American Geophysical Union, Fall Meeting 2005, abstract #SM13C-03

Physics

2723 Magnetic Reconnection (7526, 7835), 2772 Plasma Waves And Instabilities (2471)

Scientific paper

In a toroidal laboratory plasma (the MST reversed field pinch) spontaneous reconnection occurs at various locations, driven by MHD tearing instabilities. The spontaneous reconnection then drives reconnection at an additional location (through a nonlinear coupling process) in a sudden burst in time. When, and only when, both spontaneous and driven reconnection are present, we observe sudden macroscopic changes in the plasma behavior; a decrease in magnetic energy, heating of ions, and transport of momentum, all occurring within 100 °s. Thus, we conclude that coupled spontaneous and driven reconnection introduces physical effects, beyond those arising from single reconnection.

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