Physics – Nuclear Physics
Scientific paper
Aug 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975icrc....2..798m&link_type=abstract
In: International Cosmic Ray Conference, 14th, Munich, West Germany, August 15-29, 1975, Conference Papers. Volume 2. (A76-26851
Physics
Nuclear Physics
4
Abundance, Chemical Elements, Cosmic Rays, Energy Spectra, Nuclei (Nuclear Physics), Satellite Observation, Galactic Radiation, Helium, Imp, Neon, Nitrogen, Oxygen, Spectrometers
Scientific paper
The fluxes of elements from lithium through oxygen at energies down to about 4 MeV/nucleon were measured during solar quiet periods from October 1972 to September 1974 by spectrometers aboard IMPs 7 and 8. The energy spectra of Li, Be, B, and C are consistent with those expected from the adiabatic deceleration of higher energy galactic cosmic rays. The He, N, and O fluxes are greatly enhanced, with relative abundances of O/He of about 0.25, O/B of about 100, and O/C of about 30 at energies of 5 to 12.5 MeV/nucleon. There is qualitative agreement between the observed He, N, O, and Ne fluxes and the source abundances estimated from the model proposed by Fisk et al. (1974); however, the observed hydrogen flux is about 1000 times lower than the source hydrogen.
Mewaldt Richard A.
Stone Edward C.
Vidor S. B.
Vogt Rochus E.
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