An Alternative to Probability Tables for Modeling Unresolved Resonance Behavior
Name
UNSE_A_2610160_O.pdf
Size
8.6 MB
Format
Adobe PDF
Checksum (MD5)
34e9452f68c80ec95878e95e0e6fff80
Author(s)
Ridley, Gavin
Forget, Benoit
Date Issued
December 17, 2025
Journal
Nuclear Science and Engineering
Publisher
Taylor & Francis
Citation
Ridley, G., & Forget, B. (2026). An Alternative to Probability Tables for Modeling Unresolved Resonance Behavior. Nuclear Science and Engineering, 1–24.
Version
Final published version
Abstract
We first review the requirements of Monte Carlo neutron transport codes to accurately model the phenomena associated with the unresolved resonance regime and present the first rigorous justification for the modeling assumption employed by probability tables for unresolved resonances. We present a new method named AURA (analytic unresolved resonance algorithm) for modeling unresolved resonance cross-sections with the normal inverse Gaussian distribution. The new method accurately models temperature dependence in the unresolved resonance region (URR), requires fewer data than previous methods, and outperforms the conventional URR treatment on GPUs.
MIT Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Terms of Use
Creative Commons Attribution-NonCommercial-NoDerivatives
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1080/00295639.2025.2610160
