The role of collisions in the particle acceleration in solar-flare magnetic traps |
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| Authors: | V A Kovalev B V Somov |
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| Institution: | (1) Institute of Terrestrial Magnetism, Ionosphere, and Radiowave Propagation, Russian Academy of Sciences, Troitsk, Moscow oblast, 142190, Russia;(2) Sternberg Astronomical Institute, Universitetskii pr. 13, Moscow, 119992, Russia |
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| Abstract: | We investigate the particle acceleration in a magnetic trap with converging mirrors, which is a constituent part of the magnetic reconnection mechanism in solar flares. We take into account the effect of Coulomb collisions on the formation of the accelerated-electron distribution function. The solution of the kinetic equation shows that the Coulomb scattering of anisotropic accelerated electrons leads to their isotropization. As a result, the fraction of trapped particles increases and the acceleration efficiency significantly rises. |
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| Keywords: | solar flares magnetic fields particle acceleration Coulomb collisions |
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