Published 1990
| Published
Book Section - Chapter
Open
Cosmic Ray Source Abundances Derived from High Energy Measurements of Fe-Group Nuclei
- Creators
-
Mewaldt, R. A.
- Webber, W. R.
- Other:
- Protheroe, R. J.
Chicago
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Abstract
We examine the cosmic ray source composition of elements from Ar to Ni (18≤ Z≤28) using data from ~0.l to ~200 GeV /nuc and a cosmic ray propagation code that includes improved fragmentation cross-sections. By fitting available satellite data over more than three decades in energy /nuc, including recent HEA0-3 data, we obtain improved source abundances for Ar, Ca, Cr, Mn, and Ni, and compare these with recent determinations of the solar composition. We find no evidence for an energy-dependent source composition below ~20 GeV/nuc, but the data at higher energies deserve further study.
Additional Information
© Organizing Committee of the 21st Int. Cosmic Ray Conference. Provided by the NASA Astrophysics Data System. This work was supported by NASA grants NAG8-678 and NCR 05-002-160. We appreciate discussions of HEAO data with W. R. Binns, T. L. Garrard, J. Klarmann, and C. J. Waddington, and help with the propagation code from B. T. Hayes.Attached Files
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Additional details
- Eprint ID
- 47199
- Resolver ID
- CaltechAUTHORS:20140714-162316365
- NASA
- NAG8-678
- NASA
- NCR 05-002-160
- Created
-
2014-07-15Created from EPrint's datestamp field
- Updated
-
2019-11-22Created from EPrint's last_modified field
- Caltech groups
- Space Radiation Laboratory
- Other Numbering System Name
- Space Radiation Laboratory
- Other Numbering System Identifier
- 1989-23