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A comment on gamma ray lines from He-4It is pointed out that excited states of He-4 cannot produce gamma ray line emission of astrophysical significance, contrary to a recent suggestion of Reina et al. (1974). The only possible gamma-ray lines in He-4 are above 25 MeV, but their excitation cross sections appear to be so small that they are probably of little astrophysical significance.
Document ID
19750035145
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Kozlovsky, B.
Ramaty, R.
(NASA Goddard Space Flight Center Laboratory for High Energy Astrophysics, Greenbelt, Md., United States)
Date Acquired
August 8, 2013
Publication Date
November 1, 1974
Publication Information
Publication: Astronomy and Astrophysics
Volume: 36
Issue: 2, No
Subject Category
Astrophysics
Accession Number
75A19217
Distribution Limits
Public
Copyright
Other

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