Discovery of ions with nuclear charge Z greater than or equal to 9 stability trapped in the earth's radiation belts

Details Discovery of ions with nuclear charge Z greater than or equal to 9 stability trapped in the earth's radiation belts Discovery of ions with nuclear charge Z greater than or equal to 9 stability trapped in the earth's radiation belts

Nov 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981p%26ss...29.1227s&link_type=abstract

(Max-Planck-Institut für Aeronomie, Symposium on Ionic Composition, Lindau ueber Northeim, West Germany, Aug. 25-29, 1980.) Plan

Computer Science

3

Heavy Ions, Ion Emission, Particle Charging, Radiation Belts, Terrestrial Radiation, Trapped Particles, Equatorial Orbits, Explorer 45 Satellite, Magnetic Storms, Magnetospheric Ion Density, Radial Distribution

Scientific paper

Observations of MeV heavy ions obtained by Explorer 45 in an equatorial earth orbit during a 7 month period in 1972 are presented, including data from four major magnetic storms. The spacecraft contained a heavy ion detector telescope and heavy ion discriminator electronics. Heavy ions were distinguished from protons and electrons, and He ions and ions heavier than F were recorded on separate data channels. The L equals 2.25 to L equals 4 zones were probed, and it was found that the relative enhancement in heavy ion fluxes in the radiation belts over the prestorm ion flux intensities tends to increase with increasing ion mass and/or increasing ion energy in the MeV range. The radial profiles of ions with nucleon number greater than nine peak at L equals 2.9, and MeV ions in this class decay on time scales from 23 days at L equals 3.25 to 55 days at L equals 2.25. Indirect evidence indicated a solar source for the very heavy ions in the magnetosphere.

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