Dynamics of physical state during two current loops collision

Details Dynamics of physical state during two current loops collision Dynamics of physical state during two current loops collision

May 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ppcn.conf..241c&link_type=abstract

In ESA, Fourth International Toki Conference on Plasma Physics and Controlled Nuclear Fusion p 241-244 (SEE N94-22624 05-75)

Physics

Plasma Physics

Collisional Plasmas, Electromagnetic Fields, Magnetic Field Configurations, Plasma Currents, Plasma-Particle Interactions, Computerized Simulation, Magnetohydrodynamics, Plasma Dynamics, Plasma Jets, Plasma Pressure

Scientific paper

A model of the two current loops collision to explain the impulsive nature of solar flares is presented. From magnetohydrodynamic equations considering the gravity and resistivity effects, self consistent expressions and equations governing a behavior of all physical quantities just after a magnetic reconnection has taken place are found. Numerical simulations revealed that the most important parameters of the problem are the plasma beta and a ratio of initial values of pressure gradient in longitudinal and radial directions. Low plasma beta case during a Y type interaction shows a rapid pinch and simultaneous enhancement of all physical quantities. Plasma beta increase causes a weakening of pinch effect and decrease of extreme values of all physical quantities. For an X type collision, the increase of the plasma beta causes high velocity jet. For I type collision it shows neither jet production nor very strong enhancement of physical quantities. Direct and oblique collisions are considered taking into account both cases of partial and complete reconnection.

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