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Author Fast, R. W. ♦ Flournoy, P. A. ♦ Tickle, R. S. ♦ Whitehead, W. D.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ ARGON 40 ♦ BREMSSTRAHLUNG ♦ CROSS SECTIONS ♦ EFFICIENCY ♦ ENERGY ♦ LITHIUM ♦ MATHEMATICS ♦ MEASURED VALUES ♦ NEUTRON DETECTION ♦ NITROGEN 14 ♦ PHOTONEUTRONS ♦ RESONANCE
Abstract Using a Halpern-type photoneutron detection system, the photoneutron yields from Li, N/supo 14/, and Ar/sup 40/ were measured as a function of the maximum bremsstrahlung energy from threshold to approximately 50 Mev. The method of Perfold and Deiss was used to extract from the yield curves the total neutron cross section; sigma = sigma ( gamma ,n) + sigma ( gamma ,pn) + 2 sigma ( gamma ,2n) +.... The results are compared with previous findings of other laboratories. No gross structure was detected in the lithium cross section in the giant resonance region. The data indicate that lithium has a high-energy tail on the cross section of considerable magnitude. (auth)
ISSN 0031899X
Educational Use Research
Learning Resource Type Article
Publisher Date 1960-04-15
Publisher Department Univ. of Virginia, Charlottesville
Journal Physical Review
Volume Number 118
Organization Univ. of Virginia, Charlottesville


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