Integral check on nuclear data of /sup 232/Th with neutron spectra in a thoria pile and from a thorium slab

Journal Article · Wed Jun 01 04:00:00 EDT 1988 · Nucl. Sci. Eng.; (United States)

OSTI ID:7083991

Kobayashi, K; Kimura, I; Mori, T

To make an integral check of the evaluated nuclear data for thorium in ENDF/B-IV, ENDF/B-V, and JENDL-2, the energy spectra of angular neutron fluxes calculated with these data bases were compared with those measured in a spherical thoria pile and form a metallic thorium slab by the Linac time-of-flight method in the 1-keV to 10-MeV energy range. The calculations were performed using the S/sub eta/ code DTF-IV and the Monte Carlo code MCNP. General agreement can be seen between the measurement and the calculation with the above three data bases. In particular, the calculation with ENDF/B-V data shows best agreement with the measurement for the thoria pile at energies below --4 MeV. However, the calculations using the ENDF/B-V and JENDL-2 data underpredicted the measurement by 30 to 40% in the energy region from several hundred kilo-electron-volts to a few mega-electron-volts.

• Research Organization: Research Reactor Institute, Kyoto Univ., Kumatori-cho, Sennan-gun, Osaka 590-04 (JP)
• OSTI ID: 7083991
• Journal Information: Nucl. Sci. Eng.; (United States), Journal Name: Nucl. Sci. Eng.; (United States) Vol. 99:2; ISSN NSENA
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
220600 -- Nuclear Reactor Technology-- Research
Test & Experimental Reactors
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
652020* -- Nuclear Properties & Reactions
A=220 & above
Experimental
654003 -- Radiation & Shielding Physics-- Neutron Interactions with Matter
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
ANGULAR DISTRIBUTION
CALCULATION METHODS
DATA
DATA BASE MANAGEMENT
DISTRIBUTION
ENERGY RANGE
EVEN-EVEN NUCLEI
EXPERIMENTAL DATA
HEAVY NUCLEI
INFORMATION
ISOTOPES
JEN-2 REACTOR
MANAGEMENT
MONTE CARLO METHOD
NEUTRON SPECTRA
NUCLEI
NUMERICAL DATA
POOL TYPE REACTORS
RADIOISOTOPES
REACTORS
RESEARCH AND TEST REACTORS
RESEARCH REACTORS
SLABS
SPECTRA
THORIUM 232
THORIUM ISOTOPES
TIME-OF-FLIGHT METHOD
WATER COOLED REACTORS
WATER MODERATED REACTORS
YEARS LIVING RADIOISOTOPES