Physics
Scientific paper
Mar 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976izssr..40..573i&link_type=abstract
(Vsesoiuznaia Konferentsiia po Fizike Kosmicheskikh Luchei, Samarkand, Uzbek SSR, Oct. 29-31, 1975.) Akademiia Nauk SSSR, Izvest
Physics
Solar Flares, Solar Protons, Diffusion Coefficient, Neutron Counters, Particle Diffusion, Propagation Modes, Satellite-Borne Instruments, Solar Cosmic Rays, Time Response
Scientific paper
The paper investigates the increase in solar cosmic-ray intensity that was recorded with ground-based neutron supermonitors and instruments aboard the Pioneer 9 and Explorer 41 spacecraft during a chromospheric flare on Aug. 7, 1972. The propagation of the particles in interplanetary space is analyzed in terms of a diffusion model which assumes that anisotropic diffusion is associated with an 'absorbing boundary' of the diffusion region beyond earth's orbit. Radial diffusion coefficients for particles with energies greater than 13.9 MeV and 60 MeV are calculated for a heliocentric distance of 1 AU, and the diffusion boundary is estimated to be located at a heliocentric distance of about 2.7 AU. It is shown that the present diffusion model describes well both the anisotropy of the solar-particle flux at the onset of the flare and the overall temporal behavior of the particles' intensity.
Dubinsky J.
Ilencik J.
Kudela Karel
Miroshnichenko Leonty I.
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