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Nuclear fragmentation parameters needed for interpretation of observed fluxes of UH cosmic ray nucleiAny 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 should not be applied to cosmic ray observations made at energies greater than or = 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.
Document ID
19950056907
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Waddington, C. J.
(Univ. of Minnesota, Minneapolis, MN US, United States)
Binns, W. R.
(Washington Univ. St. Louis, MO, US, United States)
Cummings, J. R.
(California Inst. of Tech., Pasadena, CA US, United States)
Garrard, T. L.
(California Inst. of Tech., Pasadena, CA US, United States)
Geer, L. Y.
(Washington Univ. St. Louis, MO, US, United States)
Klarmann, J.
(Washington Univ. St. Louis, MO, US, United States)
Nilsen, B. S.
(Univ. of Minnesota, Minneapolis, MN US, United States)
Date Acquired
August 16, 2013
Publication Date
June 1, 1995
Publication Information
Publication: Advances in Space Research
Volume: 15
Issue: 6
ISSN: 0273-1177
Subject Category
Space Radiation
Accession Number
95A88506
Distribution Limits
Public
Copyright
Other

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