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The isotopes of H and He in solar cosmic raysThe isotopic composition of H and He in solar cosmic rays was studied with the solar galactic cosmic ray experiment on the Orbiting Geophysical Observatory, OGO-6. Averaging over 20 days of data from seven flare events during 1969, the ratios He-3/-He-4 = 0.10 + or - 0.02, D/H (76) .0003 and T/H (76) .0001 in the 4 to 5 MeV/nucleon energy range were obtained. In addition, large variations were found in the relative abundance of He-3 from event of event, with a maximum ratio of He-3/He-4 = 0.26 + or - 0.08 observed on October 14 and 15, 1969. The relative abundance of He-3 and D during this event does not seem to be consistent with existing calculations of the nuclear interaction orgin of these isotopes.
Document ID
19740013353
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Garrard, T. L. (California Inst. of Tech. Pasadena, CA, United States)
Stone, E. C. (California Inst. of Tech. Pasadena, CA, United States)
Vogt, R. E. (California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 7, 2013
Publication Date
January 1, 1973
Publication Information
Publication: NASA, Washington High Energy Phenomena on the Sun
Subject Category
Physics, Atomic, Molecular, And Nuclear
Report/Patent Number
NSSDC-ID-69-051A-20-PM
Accession Number
74N21466
Funding Number(s)
CONTRACT_GRANT: NGR-05-002-160
CONTRACT_GRANT: NAS5-9312
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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