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Accession Number
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DE2012-1045849
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Title
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ORNL Resonance Evaluation for ENDF/B-VII.1.
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Publication Date
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2012
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Media Count
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2p
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Personal Author
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D. Wiarda G. Arbanas K. H. Guber L. C. Leal M. E. Dunn
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Abstract
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Cross-section evaluations in the resonance region are performed at Oak Ridge National Laboratory (ORNL) with the computer code SAMMY based on formalisms derived from the R-matrix theory. Resonance parameters (RPs) obtained in the evaluation, combined with resonance formalism, replicate a regression of the experimental data. The RPs are also used to generate cross-section data for neutron transport calculations in analyses of nuclear reactor design and nuclear criticality safety. In addition to generating RPs, the evaluation also generates the resonance parameter covariance (RPC) data. Several ORNL resonance evaluations, including RPs and RPCs, were incorporated in the recently released US-evaluated nuclear data library, ENDF/B-VII.1. A brief summary of the RPs and RPCs evaluated at ORNL is given.
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Keywords
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Computer codes
Criticality
Cross sections
Design
Evaluation
Formalisms
Neutron transport
Oak Ridge National Laboratory
R matrix
Reactors
Resonance
Safety
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Source Agency
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Technical Information Center Oak Ridge Tennessee
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NTIS Subject Category
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77 - Nuclear Science & Technology
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Corporate Author
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Oak Ridge National Lab., TN.
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Document Type
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Technical report
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Title Note
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N/A
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NTIS Issue Number
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1226
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Contract Number
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DE-AC05-00OR22725
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