Dependence of PCA amplitude on the energy spectrum of solar proton fluxes

Details Dependence of PCA amplitude on the energy spectrum of solar proton fluxes Dependence of PCA amplitude on the energy spectrum of solar proton fluxes

Jun 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988ge%26ae..28..373u&link_type=abstract

Geomagnetizm i Aeronomiia (ISSN 0016-7940), vol. 28, May-June 1988, p. 373-379. In Russian.

Physics

Energy Spectra, Polar Cap Absorption, Proton Flux Density, Solar Protons, Amplitudes, Solar Terrestrial Interactions

Scientific paper

The effect of the proton energy spectrum on the maximum value of the PCA at a frequency of 30 MHz is examined on the basis of data on 89 events during 1970-1979. It is shown that there exists an optimal threshold energy, equal on the average to 6.3 MeV, for which the correlation between the integral proton flux and the PCA amplitude does not depend on the proton spectrum index. At an energy of 10 MeV, greater than the optimal threshold energy, the softer energy spectrum corresponds to stronger absorption.

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