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Calculations of neutron flux spectra induced in the earth's atmosphere by galactic cosmic rays.Calculations have been carried out to determine the neutron flux induced in the earth's atmosphere by galactic protons and alpha particles at solar minimum for a geomagnetic latitude of 42 N. Neutron flux spectra in the energy range from about 10 to the minus 8th to about 100,000 MeV at various depths in the atmosphere were calculated by using Monte Carlo and discrete ordinates methods, and various comparisons with experimental data are presented. The magnitude and shape of the calculated neutron leakage spectrum at the particular latitude considered support the theory that the cosmic ray albedo neutron decay (Crand) mechanism is the source of the protons trapped in the inner radiation belt.
Document ID
19730048624
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Armstrong, T. W.
Chandler, K. C.
Barish, J.
(Oak Ridge National Laboratory Oak Ridge, Tenn., United States)
Date Acquired
August 7, 2013
Publication Date
June 1, 1973
Publication Information
Publication: Journal of Geophysical Research
Volume: 78
Subject Category
Space Radiation
Accession Number
73A33426
Funding Number(s)
CONTRACT_GRANT: NASA ORDER H-38280-A
Distribution Limits
Public
Copyright
Other

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