Measurement of neutron spatial distribution in a water moderated, thorium oxide rod lattice (LWBR Development Program)

Technical Report · Sun Feb 01 04:00:00 EST 1970

OSTI ID:6747322

Beilin, P B

A large lattice of Zircaloy-4 rods filled with ThO/sub 2/ pellets and completely submersed in water was used to test the cross sections of ThO/sub 2/, H/sub 2/, and Zr. The spontaneous fissions from 5 micrograms of /sup 252/Cf provided the source neutrons. Cd covered In foils within the rods detected the neutrons up to 35 centimeters from the source. The measured foil activations were subsequently modified to correspond to activations by the main 1.458-ev indium resonance alone. This measured distribution was then compared to the predictions of a 3-D Monte Carlo calculation. As the distance from the source increased, the measured distribution decreased significantly slower than the Monte Carlo predicted distribution. 31 references. (NSA 24: 18783)

• Research Organization: Bettis Atomic Power Lab., Pittsburgh, PA (USA)
• DOE Contract Number: AT(11-1)-GEN-14
• OSTI ID: 6747322
• Report Number(s): WAPD-TM-915
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
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Breeding
ACTINIDE COMPOUNDS
BREEDER REACTORS
CHALCOGENIDES
COMPARATIVE EVALUATIONS
DISTRIBUTION
FUEL ASSEMBLIES
LWBR TYPE REACTORS
MONTE CARLO METHOD
NEUTRON FLUX
OXIDES
OXYGEN COMPOUNDS
RADIATION FLUX
REACTOR LATTICES
REACTORS
SPATIAL DISTRIBUTION
THERMAL REACTORS
THORIUM COMPOUNDS
THORIUM OXIDES
THREE-DIMENSIONAL CALCULATIONS
WATER COOLED REACTORS
WATER MODERATED REACTORS