Absolute measurements of the sup 197 Au(n,. gamma. ) sup 198 Au cross section for fast neutrons

Journal Article · Tue Oct 01 00:00:00 EDT 1991 · Nuclear Science and Engineering; (United States)

OSTI ID:5732771

Sakamoto, S ^[1]; Quang, E; Knoll, G F ^[2]

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1. Tokai Univ., Dept. of Nuclear Engineering, 1117 Kitakaname Hiratuka-shi, Kanagawa 259-12 (JP)
2. Univ. of Michigan, Dept. of Nuclear Engineering, Ann Arbor, MI (US)

This paper reports on neutron capture cross sections for the {sup 197}Au(n,{gamma}){sup 198}Au reaction that have been determined at neutron energies of 23 and 967 keV. These are the median energies of the two photoneutron sources, Sb-Be and Na-Be, applied in this study. Reaction rates were determined by gamma counting of the {sup 198}Au activity using a pair of cylindrical NaI(Tl) detectors. The detection efficiency of the detectors was determined using 4{pi} beta-gamma coincidence counting techniques. The neutron emission rates of the photoneutron sources were determined by indirect comparison with the U.S. National Bureau of Standards NBS-I neutron standard source using the University of Michigan manganese bath. The values obtained for the {sup 197}Au(n,{gamma}){sup 198}Au cross section are 617.8 {plus minus} 11.1 mb and 99.7 {plus minus} 2.8 mb at 23 and 967 keV, respectively.

• OSTI ID: 5732771
• Journal Information: Nuclear Science and Engineering; (United States), Journal Name: Nuclear Science and Engineering; (United States) Vol. 109; ISSN 0029-5639; ISSN NSENA
• Country of Publication: United States
• Language: English

Related Subjects

663550* -- Nuclear Mass Ranges-- A=59-89-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
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PHOTONEUTRONS
PHOTONUCLEONS
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