Solar flare protons and alpha particles during the last three solar cycles

Details Solar flare protons and alpha particles during the last three solar cycles Solar flare protons and alpha particles during the last three solar cycles

Jul 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988jgr....93.7195g&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 93, July 1, 1988, p. 7195-7205. Research supported by the Max-Planck-Gese

Physics

45

Alpha Particles, Cobalt Isotopes, Energetic Particles, Solar Cycles, Solar Flares, Solar Protons, Balloon-Borne Instruments, Correlation, Kinetic Energy, Solar Activity

Scientific paper

This paper presents solar-flare-associated proton and alpha-particle fluxes determined for major events from October 1972 through March 1987 (the period that represents the last part of solar cycle 20 and the whole of solar cycle 21), using data obtained by detectors on board the IMP-7 and IMP-8 satellites, along with earlier obtained data for cycle 20. It was found that the average omnidirectional flux of protons with kinetic energy above 10 MeV for cycle 21 (64/sq cm per sec) is lower than the corresponding number for cycle 20 (92/sq cm per sec) and for the cycle 19 (378/sq cm per sec). No definitive correlation was found to exist between cycle-averaged solar flare proton fluxes and peak sunspot numbers.

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