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The elemental abundance ratios of interstellar secondary and primary cosmic raysWe report new observations of abundances in the charge range (Z) between 2 and 10, which were obtained with a dE/dx-Cerenkov detector launched into a polar orbit on OGO-6 as part of the Caltech Solar and Galactic Cosmic Ray Experiment. Integral rigidity spectra of all the elements observed have shapes similar to that of the helium spectrum in the rigidity range of 2 to 14 GV, approaching a power law with exponent -1.6 above 8 GV. Calculations of interstellar propagation assuming a steady-state model and including the presence of interstellar helium and the effects of solar modulation predict a variation with rigidity of ratios such as Be-O and B/O, which is not observed. The data can be explained by assuming a rigidity-dependent confinement of cosmic rays within the Galaxy.
Document ID
19740047440
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Brown, J. W.
Stone, E. C.
Vogt, R. E.
(California Institute of Technology Pasadena, Calif., United States)
Date Acquired
August 7, 2013
Publication Date
January 1, 1974
Subject Category
Space Radiation
Report/Patent Number
NSSDC-ID-69-051A-20-PM
Meeting Information
Meeting: International Cosmic Ray Conference
Location: Denver, CO
Start Date: August 17, 1973
End Date: August 30, 1973
Accession Number
74A30190
Funding Number(s)
CONTRACT_GRANT: NGR-05-002-160
CONTRACT_GRANT: NAS5-9312
Distribution Limits
Public
Copyright
Other

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