Resonance Evaluation of 48Ti Including Covariance for Criticality Safety Applications
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
In this work we report the methodology and the results of an evaluation carried out for 48Ti in the resolved resonance region for applications in criticality safety calculations. The evaluation was performed using the computer code SAMMY with the reduced R-matrix Reich-Moore formalism. The Bayes scheme was utilized for fitting the experimental data. New transmission and capture data were essential in the evaluation process. A complete set of resonance parameters was obtained in the energy region from thermal to 400 keV. In addition to the resonance parameters, a resonance parameter covariance matrix was also obtained. The impact of the new resonance parameter evaluation in benchmark calculations, as well as the uncertainty, was verified.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP)
- DOE Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1025843
- 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
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Related Subjects
97 MATHEMATICS AND COMPUTING
BENCHMARKS
COMPUTER CODES
CRITICALITY
EVALUATION
MESONS
NEUTRONS
R MATRIX
RESONANCE
SAFETY
Nuclear Criticality Safety Program (NCSP)
Ti-48
SAMMY
Reduced R-matrix Reich-Moore Formalism
Methodology
Evaluation
Results
Bayes scheme