Absorption cross-section measurements for $sup 252$Cf spontaneous fission neutrons

Journal Article · Mon Dec 01 04:00:00 EST 1975 · Nucl. Sci. Eng., v. 58, no. 4, pp. 361-370

OSTI ID:4072718

Green, L

Absolute absorption cross sections of $sup 232$Th and $sup 197$Au for $sup 252$Cf spontaneous fission neutrons have been measured. Irradiations were performed in an exceptionally low mass source-foil arrangement, providing a ''pure'' spectrum with few corrections. Calibration of the activation detector was achieved by irradiating identical foils in the Standard Thermal Flux at the National Bureau of Standards. The results obtained were 79.9 +- 2.9 mb for $sup 197$Au and 87.8 +- 4.0 mb for $sup 232$Th. The corresponding values calculated from ENDF/B-III data are 84.3 and 99.3 mb, respectively. A simple ratio technique was also used to obtain an independent estimate of the relative $sup 232$Th to $sup 197$Au integral cross sections, yielding a value in good agreement with that above. This technique was extended to $sup 181$Ta, $sup 98$Mo, and $sup 63$Cu. 5 tables, 3 figures. (auth)

• Research Organization: Westinghouse Electric Corp., West Mifflin, PA
• NSA Number: NSA-33-021696
• OSTI ID: 4072718
• Journal Information: Nucl. Sci. Eng., v. 58, no. 4, pp. 361-370, Journal Name: Nucl. Sci. Eng., v. 58, no. 4, pp. 361-370; ISSN NSENA
• Country of Publication: United States
• Language: English

Related Subjects

*CALIFORNIUM 252-- SPONTANEOUS FISSION
*GOLD 197 TARGET-- NEUTRON REACTIONS
*GOLD 197-- NEUTRON REACTIONS
*THORIUM 232 TARGET-- NEUTRON REACTIONS
*THORIUM 232-- NEUTRON REACTIONS
643205*
COPPER 63
CROSS SECTIONS
FISSION NEUTRONS
MOLYBDENUM 98
N68951* --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
190 <= A <= 219--Nuclear Reactions & Scattering
N69151 --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
A >= 220--Nuclear Reactions & Scattering
TANTALUM 181