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Solar-flare neutrons and gamma-raysThe numbers and spectra of the accelerated protons and nuclei that produce the neutrons and gamma-rays observed in solar flares are derived, and the results are compared with interplanetary observations of flare protons. The two most widely studied flare acceleration mechanisms, stochastic and diffusive shock acceleration, are discussed, and the arguments favoring the thick-target interaction model for neutron and gamma-ray production at the sun are briefly reviewed. The pertinent results of the theory of neutron and gamma-ray production are presented. The number and spectrum of the accelerated particles are derived from observations of nuclear deexcitation lines and the 2.223 MeV line from several flares. The June 21, 1980 and June 3, 1982 flares, from which a wealth of neutron, gamma-ray and energetic-particle data has recently become available, are discussed.
Document ID
19850046170
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Murphy, R. J.
(NASA Goddard Space Flight Center Laboratory for High-Energy Astrophysics, Greenbelt; Maryland, University, College Park, MD, United States)
Ramaty, R.
(NASA Goddard Space Flight Center Laboratory for High-Energy Astrophysics, Greenbelt, MD, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1984
Publication Information
Publication: Advances in Space Research
Volume: 4
Issue: 7, 19
ISSN: 0273-1177
Subject Category
Solar Physics
Accession Number
85A28321
Distribution Limits
Public
Copyright
Other

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