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Measurement of the cosmic-ray iron spectrum between 60 and 200 GeV per nucleonA measurement of the spectral index of Galactic cosmic-ray (GCR) iron has been made using a high-energy gas Cerenkov spectrometer. The spectral index of GCR iron is found to be 2.56 + or - 0.11 in the energy range 57-200 GeV/ nucleon. This result indicates that the source spectrum of GCR iron is similar to that of other primary GCR nuclei and is consistent with the simplest models of GCR propagation.
Document ID
19900038846
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
doi:10.1086/168483
Authors
Esposito, Joseph A. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Streitmatter, Robert E. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Balasubrahmanyan, V. K. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Ormes, Jonathan F. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 14, 2013
Publication Date
March 10, 1990
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 351
ISSN: 0004-637X
Subject Category
Space Radiation
Accession Number
90A25901
Distribution Limits
Public
Copyright
Other

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