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The isotopic composition of cosmic ray B, C, N, and O nuclei

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.

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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
Related URLs:
URLURL TypeDescription
Mewaldt, R. A.0000-0003-2178-9111
Stone, E. C.0000-0002-2010-5462
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.
Group:Space Radiation Laboratory
Funding AgencyGrant Number
NASANAS 5-20721
NASANGR 05-002-160
Subject Keywords:cosmic rays: abundances - cosmic rays: general
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Other Numbering System NameOther Numbering System ID
Space Radiation Laboratory1981-20
Record Number:CaltechAUTHORS:20140219-101245005
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:43871
Deposited By: Tony Diaz
Deposited On:24 Feb 2014 18:50
Last Modified:10 Nov 2021 16:44

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