Secondary electron-capture-decay isotopes and implications for the propagation of galactic cosmic rays

Details Secondary electron-capture-decay isotopes and implications for the propagation of galactic cosmic rays Secondary electron-capture-decay isotopes and implications for the propagation of galactic cosmic rays

Sep 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aipc..528..406n&link_type=abstract

ACCELERATION AND TRANSPORT OF ENERGETIC PARTICLES OBSERVED IN THE HELIOSPHERE: ACE 2000 Symposium. AIP Conference Proceedings, V

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Cosmic Rays, Cosmic Ray Nucleosynthesis, Neutrino, Muon, Pion, And Other Elementary Particles, Cosmic Rays

Scientific paper

We report the first observation of an energy dependence in the titanium, vanadium, and chromium isotopic abundances in cosmic rays. The observations were made in the 100-500 MeV/nucleon energy interval using data from the Cosmic Ray Isotope Spectrometer on the ACE spacecraft. The 51Cr and 49V isotopes in cosmic rays are produced by fragmentation of heavier cosmic ray nuclides and decay only by electron capture. The observations indicate that electron-capture decay occurred primarily at the lower energies measured, and that there is a resulting energy dependence in the abundances of these isotopes and their decay products. .

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