Abstract
To resolve discrepancies in evaluated cross sections among major nuclear data libraries, energy-differential neutron transmission and radiative capture yield of 181Ta were measured from 0.15 to 100 keV using multiple sample thicknesses. The new measurements provide resolution such that the resolved resonance region (RRR) can be evaluated up to at least 2.5 keV and the unresolved resonance region can be evaluated up to at least 100 keV. The transmission and capture yield measurements were modeled using resonance parameters from three major libraries to assess the predictive capability of each. It was found that JENDL-5.0 performed best in the RRR. Because of the poor performance of the U.S. ENDF/B evaluation, it is recommended that ENDF/B be reevaluated for 181Ta.
| Original language | English |
|---|---|
| Pages (from-to) | 1155-1165 |
| Number of pages | 11 |
| Journal | Nuclear Science and Engineering |
| Volume | 198 |
| Issue number | 6 |
| DOIs | |
| State | Published - 2024 |
Funding
This work was supported by the Nuclear Criticality Safety Program, funded and managed by the National Nuclear Security Administration for the Department of Energy. The authors wish to thank Peter Brand, Michael Bretti, Azeddine Kerdoun, Larry Krusieski, and Matt Gray for their skillful operation of the RPI LINAC and diligent support with mechanical and electrical work. This work was supported by the Nuclear Criticality Safety Program, funded and managed by the National Nuclear Security Administration for the U.S. Department of Energy. ORNL is managed by UT-Battelle, LLC, under contract number DE-AC05-00OR22725 for the U.S. Department of Energy. This manuscript has been authored by UT-Battelle LLC under contract DE-AC05-00OR22725 with the U.S. Department of Energy (DOE). The U.S. government retains and the publisher, by accepting the article for publication, acknowledges that the U.S. government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for U.S. government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan). The authors wish to thank Peter Brand, Michael Bretti, Azeddine Kerdoun, Larry Krusieski, and Matt Gray for their skillful operation of the RPI LINAC and diligent support with mechanical and electrical work. This work was supported by the Nuclear Criticality Safety Program, funded and managed by the National Nuclear Security Administration for the U.S. Department of Energy. ORNL is managed by UT-Battelle, LLC, under contract number DE-AC05-00OR22725 for the U.S. Department of Energy. This manuscript has been authored by UT-Battelle LLC under contract DE-AC05-00OR22725 with the U.S. Department of Energy (DOE). The U.S. government retains and the publisher, by accepting the article for publication, acknowledges that the U.S. government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for U.S. government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan ).
Keywords
- Nuclear data
- neutron transmission
- radiative capture yield
- resonance
- tantalum