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地球物理学报 2006
Physical analysis and numerical simulation on the mechanism of electron acceleration in magnetic reconnection
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Abstract:
Observations show that electron acceleration in solar flares occurs in magnetic reconnection regions above the soft X-ray flare loops in the corona. 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 of 10keV to 10MeV.The results of this study demonstrate that the longitudinal magnetic field efficiently "locks" electrons in the reconnecting current sheet,thus allowing the acceleration by the transverse electric field.This mechanism may be useful to interpret the generation of relativistic ions in large impulsive flares.