Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977izssr..41.1832i&link_type=abstract
(Mezhdunarodnyi Seminar po Aktivnym Protsessam na Solntse i Probleme Solnechnykh Neitrino, 8th, Leningrad, USSR, Sept. 25-27, 19
Astronomy and Astrophysics
Astronomy
Gamma Ray Astronomy, Neutron Emission, Particle Production, Solar Corpuscular Radiation, Solar Flares, Solar Neutrons, Helium Isotopes, Microwave Emission, Solar Atmosphere, Solar Wind, Solar X-Rays, Thomas-Fermi Model
Scientific paper
Thin-target and thick-target models are used to interpret data on the rates of generation and the total amount of neutrons and gamma rays produced in the flare of 4 August 1972, with special attention given to flare-related acceleration of particles and the dynamic characteristics of microwave, X-ray and gamma-ray emission. It was determined that the total amount of accelerated particles was (8 plus or minus 2) x 10 to the 33rd and (1.2 plus or minus 0.4) x 10 to the 33rd for the thin-target and thick-target models, respectively. The maximum intensity of neutrons at the earth occurred 2000-4000 sec after the start of nuclear reactions and was of the order of 0.008 per sq cm per sec per MeV for energies of 10-30 MeV. The relative concentration of He-3 in the neutron capture region (subphotospheric layers with a depth of 1.5-5 g/sq cm) was found to exceed three times that in the solar wind.
Ibragimov I. A.
Kocharov Grant E.
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