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Solar neutron emissivity during the large flare on 1982 June 3For the solar neutron event on June 3, 1982, it is shown here that the combined SMM Gamma Ray Spectrometer and Jungfraujoch neutron monitor data require a time-extended emission of neutrons at the sun with energies of 100 MeV to about 2 GeV. The solar neutron emissivity spectrum is shown to have a strong downward curvature or truncation between 2 and 4 GeV. A Bessel function and truncated power law give acceptable fits to the observational data, but only the power law can explain the rapid rise of the neutron monitor count rate. The integrated emissivity of neutrons above E(n) of 100 MeV is strongly constrained at 8 x 10 to the 28th neutrons/sr and is essentially independent of neutron spectral shape. At neutron energies of about 100 MeV, good agreement is found for both spectral forms with observations of neutron decay protons.
Document ID
19870059563
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Chupp, E. L.
(New Hampshire Univ. Durham, NH, United States)
Forrest, D. J.
(New Hampshire, University Durham, United States)
Kanbach, G.
(New Hampshire Univ. Durham, NH, United States)
Flueckiger, E.
(New Hampshire Univ. Durham, NH, United States)
Golliez, F.
(Bern, Universitaet Switzerland)
Date Acquired
August 13, 2013
Publication Date
July 15, 1987
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 318
ISSN: 0004-637X
Subject Category
Solar Physics
Report/Patent Number
AD-A199487
AFGL-TR-88-0223
Accession Number
87A46837
Funding Number(s)
CONTRACT_GRANT: BMFT-01-OK-017-ZA/WS/WRK00275
CONTRACT_GRANT: NASA ORDER S-14513-D
CONTRACT_GRANT: NAG5-720
CONTRACT_GRANT: SNSF-2,632-0,85
CONTRACT_GRANT: NAS5-28609
Distribution Limits
Public
Copyright
Other

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