The isotopic composition of neon and magnesium in the low energy cosmic rays

Details The isotopic composition of neon and magnesium in the low energy cosmic rays The isotopic composition of neon and magnesium in the low energy cosmic rays

Oct 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980icrc....1..436g&link_type=abstract

In: International Cosmic Ray Conference, 16th, Kyoto, Japan, August 6-18, 1979, Conference Papers. Volume 1. (A81-12386 02-93) T

Physics

Cosmic Rays, Galactic Radiation, Magnesium Isotopes, Neon Isotopes, Particle Energy, Abundance, Explorer 47 Satellite, Interstellar Matter, Onboard Equipment, Radiation Measurement, Solar Radiation

Scientific paper

The ratios Ne-22/Ne-20 and Mg-26/Mg-24 were measured in galactic cosmic rays by the IMP-7 satellite in the 60 to 230 MeV/nucleon range. The neon cosmic ray source ratio Ne-22/Ne-20 is about 0.38, which is much larger than the current solar system relationship; the Mg data agrees with the solar system isotopic ratio of 0.14 at the cosmic ray source. The Ne and Mg source ratios are explained by supernova models, and become a new constraint which should be satisfied by any model of cosmic ray origin.

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