PHOTONEUTRON CROSS SECTIONS OF Li, N, AND A

Journal Article · Fri Apr 15 04:00:00 EST 1960 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.118.535· OSTI ID:4156950

Fast, R W; Flournoy, P A; Tickle, R S; Whitehead, W D

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)

• Research Organization: Univ. of Virginia, Charlottesville
• NSA Number: NSA-14-015316
• OSTI ID: 4156950
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 118; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ARGON 40
BREMSSTRAHLUNG
CROSS SECTIONS
EFFICIENCY
ENERGY
LITHIUM
MATHEMATICS
MEASURED VALUES
NEUTRON DETECTION
NITROGEN 14
PHOTONEUTRONS
PHYSICS
RESONANCE