Measured and evaluated neutron cross sections of elemental bismuth. [1 to 14 MeV]

Technical Report · Tue Apr 01 04:00:00 EST 1980

OSTI ID:5237533

Smith, A; Guenther, P; Smith, D; Whalen, J; Howerton, R

Neutron total cross sections of elemental bismuth are measured with broad resolution from 1.2 to 4.5 MeV to accuracies of approx. = 1%. Neutron-differential-elastic-scattering cross sections of bismuth are measured from 1.5 to 4.0 MeV at incident neutron energy intervals of approx.< 0.2 MeV over the scattered-neutron angular range approx. = 20 to 160 deg. Differential neutron cross sections for the excitation of observed states in bismuth at 895 +- 12, 1606 +- 14, 2590 +- 15, 2762 +- 29, 3022 +- 21, and 3144 +- 15 keV are determined at incident neutron energies up to 4.0 MeV. An optical-statistical model is deduced from the measured values. This model, the present experimental results, and information available elsewhere in the literature are used to construct a comprehensive evaluated nuclear data file for elemental bismuth in the ENDF format. The evaluated file is particularly suited to the neutronic needs of the fusion-fission hybrid designer. 87 references, 10 figures, 6 tables.

• Research Organization: Argonne National Lab., IL (USA)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5237533
• Report Number(s): ANL/NDM-51
• Country of Publication: United States
• Language: English

Related Subjects

651925* -- Nuclear Properties &amp; Reactions
A=190-219
Experimental-- Nuclear Reactions &amp; Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
BARYON REACTIONS
BARYONS
BISMUTH 209
BISMUTH 209 TARGET
BISMUTH ISOTOPES
CAPTURE
COMPOUND-NUCLEUS REACTIONS
CROSS SECTIONS
DATA
DIFFERENTIAL CROSS SECTIONS
DIRECT REACTIONS
DISTRIBUTION
ELASTIC SCATTERING
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY RANGE
EVALUATED DATA
FAST NEUTRONS
FERMIONS
HADRON REACTIONS
HADRONS
HEAVY NUCLEI
HYBRID REACTORS
INELASTIC SCATTERING
INFORMATION
ISOTOPES
KNOCK-OUT REACTIONS
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 01-10
MEV RANGE 10-100
NEUTRON REACTIONS
NEUTRONS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUCLEONS
NUMERICAL DATA
ODD-EVEN NUCLEI
OPTICAL MODELS
SCATTERING
STABLE ISOTOPES
STATISTICAL MODELS
TARGETS
TOTAL CROSS SECTIONS