Proper use of the Nordheim integral treatment for resonance processing
Conference
·
OSTI ID:5407520
The Nordheim integral treatment is an approximate method for determining the neutron spectra within materials containing resonance cross sections. These spectra are necessary to determine the flux-weighted multigroup data properly. In practice, the resonance material multigroup cross sections produced by use of Nordheim-generated spectra are combined with other multigroup cross sections, and further energy and spatial collapsing of the data is performed. The question arises of whether performing this spatial collapse following the Nordheim treatment constitutes double spatial weighting. To investigate this possibility, results were compared with those for a second method of forming the multigroup cross section data, and with the results of a fine-group calculation. It was concluded that the first method above is the procedure to follow for the proper use of the Nordheim integral treatment. 1 table. (RWR)
- Research Organization:
- Tennessee Univ., Knoxville (USA). Dept. of Nuclear Engineering; Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 5407520
- Report Number(s):
- CONF-791103-85
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
654003* -- Radiation & Shielding Physics-- Neutron Interactions with Matter
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ABSORPTION
ACTINIDES
BARYONS
CROSS SECTIONS
CRYOGENIC FLUIDS
CYLINDERS
DATA
DATA FORMS
ELEMENTARY PARTICLES
ELEMENTS
EPITHERMAL NEUTRONS
FERMIONS
FLUIDS
FUNCTIONS
GROUP CONSTANTS
HADRONS
HYDROGEN
INELASTIC SCATTERING
INFORMATION
ISOLATED VALUES
METALS
MULTIGROUP THEORY
NEUTRAL-PARTICLE TRANSPORT
NEUTRON SPECTRA
NEUTRON TRANSPORT
NEUTRON TRANSPORT THEORY
NEUTRONS
NONMETALS
NUCLEONS
NUMERICAL DATA
RADIATION TRANSPORT
RESONANCE ABSORPTION
RESONANCE NEUTRONS
RESONANCE SCATTERING
SCATTERING
SPECTRA
THEORETICAL DATA
TRANSPORT THEORY
URANIUM
WEIGHTING FUNCTIONS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ABSORPTION
ACTINIDES
BARYONS
CROSS SECTIONS
CRYOGENIC FLUIDS
CYLINDERS
DATA
DATA FORMS
ELEMENTARY PARTICLES
ELEMENTS
EPITHERMAL NEUTRONS
FERMIONS
FLUIDS
FUNCTIONS
GROUP CONSTANTS
HADRONS
HYDROGEN
INELASTIC SCATTERING
INFORMATION
ISOLATED VALUES
METALS
MULTIGROUP THEORY
NEUTRAL-PARTICLE TRANSPORT
NEUTRON SPECTRA
NEUTRON TRANSPORT
NEUTRON TRANSPORT THEORY
NEUTRONS
NONMETALS
NUCLEONS
NUMERICAL DATA
RADIATION TRANSPORT
RESONANCE ABSORPTION
RESONANCE NEUTRONS
RESONANCE SCATTERING
SCATTERING
SPECTRA
THEORETICAL DATA
TRANSPORT THEORY
URANIUM
WEIGHTING FUNCTIONS