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Measurements of the atmospheric neutron leakage rateThe atmospheric neutron leakage rate in the energy range from 0.01 to 10,000,000 eV has been measured as a function of latitude, altitude, and time with a neutron detector on board the Ogo 6 satellite. The latitude dependence of the neutron leakage is in reasonable agreement with that predicted by Lingenfelter (1963) and Light et al. (1973) if the neutron energy spectrum has the shape calculated by Newkirk (1963). The change in the neutron latitude dependence with the cosmic ray modulation agrees with the predictions of Lingenfelter and Light et al. For several solar proton events enhancements were observed in the neutron counting rates at lambda greater than or equal to 70 deg. Such events, however, provide an insignificant injection of protons at E less than or equal to 20 MeV into the radiation belts. An isotropic angular distribution of the neutron leakage in the energy range from 0.1 keV to 10 MeV best fits the observed altitude dependence of the neutron leakage flux.
Document ID
19740032606
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Lockwood, J. A.
Ifedili, S. O.
Jenkins, R. W.
(New Hampshire, University Durham, N.H., United States)
Date Acquired
August 7, 2013
Publication Date
December 1, 1973
Publication Information
Publication: Journal of Geophysical Research
Volume: 78
Subject Category
Space Radiation
Report/Patent Number
NSSDC-ID-69-051A-18-PM
Accession Number
74A15356
Funding Number(s)
CONTRACT_GRANT: NGR-30-002-088
CONTRACT_GRANT: NAS5-9313
Distribution Limits
Public
Copyright
Other

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