IMPACT OF MAGNETIC ENVIRONMENT ON THE GENERATION OF HIGH-ENERGY NEUTRONS AT THE SUN

This paper demonstrates the important interplanetary manifestation of strongly tilted magnetic fields at the flare site. We start with analy sis of Big Bear Solar Observatory (BBSO) observations of magnetic stru ctures at sites of two flares responsible for > 100 MeV neutron events . Based on these observations, a model of neutron production is consid ered. This model takes into account the observed large tilt of magneti c field lines at footpoints of flare magnetic loops. Results of the ne w calculations are compared with both previous calculations and observ ations. The tilt of magnetic field lines at the flare site is proved t o be the most important parameter limiting anisotropy of high-energy s econdary emission in solar flares.