Thermal scattering cross sections of /sup 233/U and /sup 232/Th (LWBR Development Program)

Technical Report · Fri Mar 01 04:00:00 EDT 1974

OSTI ID:7074905

Green, L; Mitchell, J A

Scattering cross sections were measured for /sup 233/U and /sup 232/Th metal samples in a moderated spectrum from a 5-milligram /sup 252/Cf source. The scattered neutrons were detected by two /sup 3/He detectors in an annular geometry. The experimental data were corrected for thermal and epithermal fissions, epithermal scattering, air scattering, room background, and self-absorption. The self-absorption corrections for the four /sup 233/U targets, covering a wide range in thickness, were obtained from Monte Carlo calculations. Corrections for the two /sup 232/Th targets used were obtained experimentally. The results obtained were 12.30 +- 0.70 barns for /sup 233/U and 12.78 +- 0.30 barns for /sup 232/Th, relative to vanadium with an assumed scattering cross section of 5.02 +- 0.10 barns. The corresponding values in the ENDF/B-III file are 14.06 and 11.82 barns, respectively. 9 figures, 5 tables. (NSA 30: 1668)

• Research Organization: Bettis Atomic Power Lab., Pittsburgh, PA (USA)
• DOE Contract Number: AT(11-1)-GEN-14
• OSTI ID: 7074905
• Report Number(s): WAPD-TM-1132
• Country of Publication: United States
• Language: English

Related Subjects

652025 -- Nuclear Properties & Reactions
A=220 & above
Experimental-- Nuclear Reactions & Scattering-- (-1987)
654003* -- Radiation & Shielding Physics-- Neutron Interactions with Matter
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON REACTIONS
BARYONS
BREEDER REACTORS
CROSS SECTIONS
ELASTIC SCATTERING
ELEMENTARY PARTICLES
FERMIONS
HADRON REACTIONS
HADRONS
INELASTIC SCATTERING
LWBR TYPE REACTORS
NEUTRAL-PARTICLE TRANSPORT
NEUTRON REACTIONS
NEUTRON TRANSPORT
NEUTRONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUCLEONS
RADIATION TRANSPORT
REACTORS
SCATTERING
TARGETS
THERMAL NEUTRONS
THERMAL REACTORS
THORIUM 232 TARGET
URANIUM 233 TARGET
WATER COOLED REACTORS
WATER MODERATED REACTORS