Abstract
Accelerated energetic particles in solar flares produced nuclear γ-lines in interactions with ambient solar atmosphere. Analysis of intensity of ratios between various γ-lines allows us to make estimations of abundance of elements, parameters of surrounding media and other solar characteristics. In this article we discuss the flux ratio between two lines from excited states of 12C ( f 15.11/ f 4.44) and our results of preliminary calculation of intensity ratio between two neutron capture lines at 3He and 1H ( f 20.58/ f 2.223). In particular we consider the opportunity to obtain n( 3He)/n( 1H) ratio during solar flares and using high-energy gamma-emission studying, based on the satellite data. Possible interpretation of spectral features observed during the January 20, 2005 solar flare is discussed. Preliminary analysis of energy spectrum in the band of 2–21 MeV gives n( 3He)/n( 1H) ∼ 8 × 10 −4 for January 20, 2005 solar flare.
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