Neutron scattering from elemental uranium and thorium

Technical Report · Sun Jan 01 00:00:00 EST 1995

DOI:https://doi.org/10.2172/125101· OSTI ID:125101

Smith, A B ^[1]; Chiba, S ^[2]

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1. Argonne National Lab., IL (United States)
2. Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan)

Differential neutron-scattering cross sections of elemental uranium and thorium are measured from {approx} 4.5 to 10.0 MeV in steps of {approx} 0.5 MeV. Forty or more differential values are obtained at each incident energy, distributed between {approx} 17{degree} and 160{degree}. Scattered-neutron resolutions are carefully defined to encompass contributions from the first four members of the ground-state rotational band (0{sup 2} g.s., 2{sup +}, 4{sup +} and 6{sup +} states). The experimental results are interpreted in the context of coupled-channels rotational models, and comparisons made with the respective ENDF/B-VI evaluated files. These comparisons suggest some modifications of the ENDF/B-VI {sup 238}U and {sup 232}Th evaluations.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 125101
• Report Number(s): ANL/NDM-135; ON: DE96002058; TRN: 96:000047
• Resource Relation: Other Information: PBD: Jan 1995; Related Information: Nuclear data and measurements series
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
URANIUM 238 TARGET
NEUTRON REACTIONS
THORIUM 232 TARGET
DIFFERENTIAL CROSS SECTIONS
EXPERIMENTAL DATA
NUCLEAR DATA COLLECTIONS
COMPARATIVE EVALUATIONS
ELASTIC SCATTERING
TIME-OF-FLIGHT METHOD
COUPLED CHANNEL THEORY
STRENGTH FUNCTIONS