磁场重联中电子加速问题的物理分析和数值研究

Observations show that electron acceleration in solar flares occurs in magnetic reconnection regions in the corona above the soft X-ray flare loops. Acceleration by a super-Dreicer electric field in a reconnecting current sheet appears to be the most direct way of producing electrons in the energy range between 10keV and 10MeV. The new effect demonstrated in this paper is that the longitudinal magnetic field efficiently “locks” electrons in the reconnecting current sheet, thus allowing their acceleration by the transverse electric field. The mechanism considered may be useful in construction of a model for generation of relativistic ions in large impulsive flares.