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Nuclear Fragmentation Parameters Needed for Interpretation of Observed Fluxes of UH Cosmic Ray Nuclei

Waddington, C. J. and Binns, W. R. and Cummings, J. R. and Garrard, T. L. and Geer, L. Y. and Klarmann, J. and Nilsen, B. S. (1995) Nuclear Fragmentation Parameters Needed for Interpretation of Observed Fluxes of UH Cosmic Ray Nuclei. Advances in Space Research, 15 (6). pp. 39-48. ISSN 0273-1177. http://resolver.caltech.edu/CaltechAUTHORS:20140523-100720835

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Abstract

Any study of the origin of the UH nuclei in the cosmic rays requires that their observed abundances be propagated back to the source. This demands a knowledge of the interaction cross sections in the materials of the detectors, any local overlying matter, and the interstellar medium. New measurements of interaction probabilities of 10.6 GeV/n gold nuclei show significant differences from previous measurements made at less than 1.0 GeV/n nuclei. These differences are particularly marked for a hydrogen target. Hence, those cross sections previously measured at low energies not be applied to cosmic ray observations made at energies ≥ 2 GeV/n. Without a measurement of the energy dependence of these cross sections it will be difficult to make reliable propagation calculations, since the differences between measured and predicted cross sections are still at the 20 to 30% level.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1016/0273-1177(94)00007-NDOIArticle
http://www.sciencedirect.com/science/article/pii/027311779400007NPublisherArticle
Additional Information:Copyright © 1995 COSPAR. Published by Elsevier. This work partially supported by grants from NASA and DOE. We thank E. C. Stone for support, Dana Beavis and the staff of BNL for making the AGS exposure possible, and Hank Crawford, Jack Engelage, and the staff of the Bevalac for making the LBL exposures possible.
Group:Space Radiation Laboratory
Funders:
Funding AgencyGrant Number
NASAUNSPECIFIED
Department of Energy (DOE)UNSPECIFIED
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Other Numbering System NameOther Numbering System ID
Space Radiation Laboratory1994-06
Record Number:CaltechAUTHORS:20140523-100720835
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20140523-100720835
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:45905
Collection:CaltechAUTHORS
Deposited By: Deborah Miles
Deposited On:28 May 2014 19:16
Last Modified:17 Sep 2015 00:19

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