Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a...102l...9k&link_type=abstract
Astronomy and Astrophysics, vol. 102, no. 2, Oct. 1981, p. L9-L11.
Astronomy and Astrophysics
Astrophysics
7
Abundance, Cosmic Rays, Manganese Isotopes, Radioactive Decay, Relativistic Particles, Scandium, Beta Particles, Chronology, Half Life, Heao 3, Iron, Ratios, Telescopes
Scientific paper
We report measurements of the abundances relative to iron of the elements scandium through manganese in galactic cosmic rays in the energy interval 0.7 to 18 GeV/n using data collected by our cosmic ray telescope on the HEAO-3 satellite. The variation versus energy of the abundance ratio of manganese over iron is markedly flatter than that of other iron secondaries. This difference is interpreted as being due to 54Mn survival at E > 15 GeV/n and to its progressive beta decay at lower energies.
Byrnak B.
Engelmann J. J.
Goret Ph.
Juliusson Einar
Koch Lydie
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