Evaluation of Tungsten Neutron Cross Sections in the Resolved Resonance Regions

Conference · Wed Jan 01 00:00:00 EST 2014

OSTI ID:1133529

Pigni, Marco T ^[1]; Leal, Luiz C ^[1]; Dunn, Michael E ^[1]; Guber, Klaus H ^[1]; Emiliani, F. ^[2]; Kopecky, S. ^[2]; Lampoudis, C. ^[3]; Schillebeeckx, P. ^[2]; Siegler, P. ^[2]

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1. ORNL
2. EC-JRC-IRMM, Geel, Belgium
3. Institute for Reference Materials and Measurements (IRMM), Geel, Belgium

We generated a preliminary set of resonance parameters for 182-184,186W in the neutron energy range of thermal up to several keV. The evaluation methodology uses the Reich-Moore approximation to t, with the R-matrix code SAMMY, the high-resolution measurements performed in 2010 and 2012 at the GEel LINear Accelerator (GELINA) facility. Particularly for 183W, the transmission data and the capture cross sections calculated with the set of resonance parameters are compared with the experimental values, and some of the average properties of the resonance parameters are discussed. In the analyzed energy range, this work almost doubles the existing resolved resonance evaluations in the ENDF/B-VII.1 library. The analysis of the performance of the calculated cross sections based on criticality benchmarks is still in progress and it is only briefly discussed.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1133529
• Resource Relation: Conference: International Conference on Nuclear Data for Science and Technology (ND 2013), New York, NY, USA, 20130304, 20130308
• Country of Publication: United States
• Language: English