Mewaldt, R. A. and Spalding, J. D. and Stone, E. C. and Vogt, R. E.
(1980)
High-Resolution Measurements of Galactic Cosmic-Ray Neon, Magnesium and Silicon Isotopes.
Astrophysical Journal, 235
.
L95-L99.
ISSN 0004-637X.
https://resolver.caltech.edu/CaltechAUTHORS:20140417-132634583
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Abstract
The individual isotopes of galactic cosmic-ray Ne, Mg, and Si at ~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 + ^(26)Mg)/^(24)Mg = 0.49(+0.23, -0.14) compared with the solar system value of 0.27, suggesting that the cosmic-ray source and solar system material were synthesized under different conditions.
| Item Type: | Article |
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| Contact Email Address: | dmiles@caltech.edu |
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| Additional Information: | Copyright 1980. The American Astronomical Society.
W.E. Althouse, A.C. Cummings and T.L. Garrard made significant contributions to the design and development of HIST. We are grateful to the Heckman/Greiner group, including Hank Crawford, and the Bevalac staff at Lawrence Berkeley Laboratory for making the heavy-ion calibrations possible. We have benefited from discussions of nucleosynthesis with W.A. Fowler and S.E. Woosley, and discussions of cosmic-ray propagation with M.E. Wiedenbeck. This work was supported in part by NASA under contract NGR 05-002-160. |
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| Group: | Space Radiation Laboratory |
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| Funders: | | Funding Agency | Grant Number |
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| NASA | NGR 05-002-160 |
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| Subject Keywords: | cosmic rays; abundances, cosmic rays: general |
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| Other Numbering System: | | Other Numbering System Name | Other Numbering System ID |
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| Space Radiaition Laboratory | 1979-7 |
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| Record Number: | CaltechAUTHORS:20140417-132634583 |
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| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20140417-132634583 |
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| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. |
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| ID Code: | 45009 |
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| Collection: | CaltechAUTHORS |
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| Deposited By: |
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| Deposited On: | 18 Apr 2014 16:52 |
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| Last Modified: | 20 Feb 2020 14:33 |
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