Accession Number : AD0751467

Title :   Polar Cap Measurements of Solar-Flare Protons with Energies Down to 12.4 keV.

Descriptive Note : Report for Oct 71-Apr 72,

Corporate Author : AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS

Personal Author(s) : Mizera,Paul F. ; Fennell,Joseph F. ; Blake,J. Bernard

Report Date : 01 OCT 1972

Pagination or Media Count : 23

Abstract : Solar protons with energies down to 12.4 keV were measured over the polar caps by instruments aboard the OV1-17 satellite. The observations were made following the 21 March 1969 solar-particle event. The polar-cap differential fluxes measured by OV1-17 and Injun-5 from 0.012 MeV to 1.1 MeV are well represented by a single power law. Over a 22 hour period the spectral index changed from 1.7 to 1.9. Temporal and spatial comparisons were made with data from the Explorer-35 and Injun-5 spacecraft. Good agreement is found at energies (>300 keV) where a comparison can be made. (Author)

Descriptors :   (*MAGNETOSPHERE, PROTONS), SOLAR FLARES, SOLAR RADIATION, POLAR REGIONS, POWER SPECTRA, SCIENTIFIC SATELLITES

Subject Categories : Atmospheric Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE