Galactic Deuterium and its Energy Spectrum above 20 MeV per Nucleon

Details Galactic Deuterium and its Energy Spectrum above 20 MeV per Nucleon Galactic Deuterium and its Energy Spectrum above 20 MeV per Nucleon

Aug 1966

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1966phrvl..17..329f&link_type=abstract

Physical Review Letters, vol. 17, Issue 6, pp. 329-333

Physics

37

Scientific paper

The fluxes and energy spectra of deuterium, protons, and helium were measured on the IMP-III satellite at a time near minimum solar activity. The deuterium differential energy spectrum in the range 17-63 MeV/nucleon is ~E+2 and, at 60 MeV/nucleon, the relative abundance ratios are H2/He4=0.15 and H2/H1=0.05. If present values of experimental cross sections for the production of H2 from nucleon interactions with He4 are used, the observed deuterium abundance may be accounted for by the traversal of He4 through 4 to 6 g/cm2 of matter in cosmic-ray sources and the interstellar medium.

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