Resonance Region Cross-Section Data Advancements for Nuclear Criticality Safety Applications and ENDF/B-VII.1

Conference · Mon Sep 19 00:00:00 EDT 2011

OSTI ID:1025853

Dunn, Michael E. ^[1]; Leal, Luiz C. ^[1]; Guber, Klaus H. ^[1]; Arbanas, Goran ^[1]; Wiarda, Dorothea ^[1]; Sayer, Royce O. ^[1]; Derrien, Herve ^[1]; Harvey, Jack ^[1]

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1. Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

ORNL has completed new resonance region cross-section evaluations with covariance data to support nuclear criticality safety applications. This paper summarizes some of the most recent cross-section evaluations that have been completed and will be made available to process into nuclear data libraries for use with radiation transport codes. Specifically, the paper summarizes the work that has been completed for ³⁵Cl, ³⁷Cl, ⁵⁰Cr, ⁵²Cr, ⁵³Cr, ⁵⁴Cr, ³⁹K, ⁴¹K, ¹⁹F, ⁵⁵Mn, ⁵⁸Ni, ⁶⁰Ni, ²³⁵U, ²³⁸U, and ²³⁹Pu. Many of the new cross-section evaluations are based on new differential data measurements in the resonance region. Furthermore, corresponding covariance data analyses have been performed in conjunction with the resonance evaluation effort thereby providing a consistent set of covariance data to complement the resonance region cross-section evaluations. As a result, the new cross-section evaluations with covariance data can be used to support sensitivity/uncertainty analyses for criticality safety applications.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1025853
• Resource Relation: Conference: 9. International Conference on Nuclear Criticality Safety (ICNC 2011), Edinburgh (United Kingdom), 19-22 Sep 2011
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
97 MATHEMATICS AND COMPUTING
CRITICALITY
EVALUATION
NEUTRONS
ORNL
RADIATION TRANSPORT
RESONANCE
SAFETY
Nuclear Criticality Safety Program (NCSP)
Resonance Region Cross-Section
Evaluations
35-CI
37-CI
50-CR
52-Cr
53-Cr
54-Cr
39-K
41-K
19-F
55-Mn
58-Ni
60-Ni
235-U
238-U
239-Pu