Theoretical modeling for neutron elastic scattering angular distribution in the fast energy range
- Los Alamos National Laboratory
One of the major issues of neutron scattering modeling in the fast energy range is the contribution of compound elastic and inelastic scattering to the total scattering process. The compound component may become large at very low energies where the angular distribution becomes 90-degree symmetric in the center-of-mass system. Together with the shape elastic component, the elastic scattering gives slightly forward-peaked angular distributions in the fast energy range. This anisotropic angular distribution gives high sensitivities to many important nuclear reactor characteristics, such as criticality and neutron shielding. In this talk we describe how the anisotropic angular distributions are calculated within the statistical model framework, including the case where strongly coupled channels exist, by combining the coupled-channels theory with the Hauser-Feshbach model. This unique capability extension will have significant advantages in understanding the neutron scattering process for deformed nuclei, like uranium or plutonium, on which advanced nuclear energy applications center.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC52-06NA25396
- OSTI ID:
- 1043559
- Report Number(s):
- LA-UR-10-08099; LA-UR-10-8099; TRN: US1203262
- Resource Relation:
- Conference: WINS 2010 Workshop on (In)Elastic Neutron Scattering ; December 6, 2010 ; Strasbourg, France
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
POLICY AND ECONOMY
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
ANISOTROPY
CENTER-OF-MASS SYSTEM
DEFORMED NUCLEI
ELASTIC SCATTERING
ENERGY RANGE
INELASTIC SCATTERING
NEUTRON SPECTRA
NUCLEAR ENERGY
SCATTERING
STATISTICAL MODELS