The investigation of powerful solar flares characteristics by analysis of excited states of C and various neutrons capture lines |
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| Authors: | IV Arkhangelskaja AI Arkhangelsky EV Troitskaya LI Miroshnichenko |
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| Institution: | 1. Astrophysics Institute of Moscow Engineering Physics Institute (State University) Kashirskoe shosse, 31, 115409, Moscow, Russia;2. Skobeltsyn Institute of Nuclear Physics of Moscow State University, 1(2), Leninskie gory, GSP-1, 119991, Moscow, Russia;3. Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation, RAS, IZMIRAN, 142190, Troitsk, Moscow Region, Russia;4. Instituto de Geofísica, UNAM, C.U., Coyoacán, 04510, México, DF., Mexico |
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| 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 (f15.11/f4.44) and our results of preliminary calculation of intensity ratio between two neutron capture lines at 3He and 1H (f20.58/f2.223). 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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| Keywords: | Solar flares Neutron capture lines Element abundances Gamma line emission |
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