Mewaldt, R. A. and Spalding, J. D. and Stone, E. C. and Vogt, R. E.
(1981)
The isotopic composition of cosmic ray B, C, N, and O nuclei.
Astrophysical Journal, 251
.
L27-L31.
ISSN 0004-637X.
doi:10.1086/183686.
https://resolver.caltech.edu/CaltechAUTHORS:20140219-101245005
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Abstract
We report new high resolution measurements of the elemental and isotopic composition of galactic
cosmic ray B, C, N, and O nuclei with ~ 30 to ~ 130 MeV nucleon^(-1). These observations place
limits on the isotopic composition of the cosmic ray source and restrict possible models of cosmic ray
origin and propagation. In particular, we find that N is significantly depleted in the cosmic ray
source with respect to the solar system and local interstellar medium, a result inconsistent with
models in which a majority of cosmic rays are accelerated interstellar medium material.
| Item Type: | Article |
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| Additional Information: | © 1981 The American Astronomical Society.
Received 1981 June 29; accepted 1981 August 13.
We thank M. E. Wiedenbeck for the use of his cosmic
ray propagation calculations and for discussions of their
interpretation. This work was supported in part by
NASA under contract NAS 5-20721 and grant 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 | NAS 5-20721 | | 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 Radiation Laboratory | 1981-20 |
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| DOI: | 10.1086/183686 |
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| Record Number: | CaltechAUTHORS:20140219-101245005 |
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| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20140219-101245005 |
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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: | 43871 |
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| Collection: | CaltechAUTHORS |
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| Deposited By: |
Tony Diaz
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| Deposited On: | 24 Feb 2014 18:50 |
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| Last Modified: | 10 Nov 2021 16:44 |
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