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    Possible detection of flare-generated positrons by Helios 1 on 3 Jun 1982 (1985)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The production of neutrons and gamma-ray lines by solar particles in the photosphere has been studied. The principal positron emiters which lead to the 0.51 MeV gamma-line are C-11 0-14, 0-15, N-13, Ne-19. The energies of the positrons form radioactive nuclei are of the order of few hundred keV. Positrons resulting from the pi(+) decay have energies of approx 10-100 MeV and cannot be measured by the MPAe-detector. Most of the positrons annihilate in the photosphere. A fraction however should be able to escape into the interplanetary space. Proton, electron and , for the first time, positron measurements (E = 152-546 keV) obtained by the MPAe-particle detector on board of Helios 1 are presented.
    Keywords: SOLAR PHYSICS
    Type: SH-1.4-10 , 19th Intern. Cosmic Ray Conf - Vol. 4; p 158-161; NASA-CP-2376-VOL-4
    Format: application/pdf
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