Published 1979
| Published
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Satellite Measurements of the Isotopic Composition of Galactic Cosmic Rays
- Other:
- Miyake, S.
Chicago
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Abstract
The individual isotopes of galactic cosmic ray Ne, Mg, and Si at ~100 MeV/nucleon have been clearly resolved with an rms mass resolution of ~0.20 amu. Our results suggest that the cosmic ray source is enriched in ^(22)Ne, ^(25)Mg, and ^(26)Mg when compared to the solar system. In particular, we find (^(25)Mg + ~^(6)Mg)/^(24)Mg = 0.49+/-.2314 compared to the solar system value of 0.27, suggesting t~at the cosmic ray source and solar system material were synthesized under different conditions.
Additional Information
Copyright IUPAP. Provided by the NASA Astrophysical Data System. W. E. Althouse, A. C. Cu11111ings and T. L. Garrard made significant contributions to the development of HIST. We are grateful to the Heckman/Greiner group and the Bevalac staff at Lawrence Berkeley Laboratory for making the heavy-ion calibrations possible. We have benefited from discussions with W. A. Fowler, M. E. Wiedenbeck and S. E. Woosley. This work was supported in part by NASA under Contract NAS5-20721 and Grant NGR 05-002-160.Attached Files
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Additional details
- Eprint ID
- 45012
- Resolver ID
- CaltechAUTHORS:20140417-134942135
- NASA
- NAS5-20721
- NASA
- NGR 05-002-160
- Created
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2014-04-21Created from EPrint's datestamp field
- Updated
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2020-02-20Created from EPrint's last_modified field
- Caltech groups
- Space Radiation Laboratory
- Other Numbering System Name
- Space Radiation Laboratory
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- 1979-09