A new 103Rh Unresolved Resonance Region evaluation

D. P. Barry; A. M. Lewis; L. Leal; J. M. Brown

doi:10.1016/j.anucene.2023.109751

A new ¹⁰³Rh Unresolved Resonance Region evaluation

D. P. Barry, A. M. Lewis, L. Leal, J. M. Brown

Nuclear Data

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

A new evaluation in the Unresolved Resonance Region has been performed for ¹⁰³Rh, an important fission product. The evaluation was done in coordination with and is consistent with a new Resolved Resonance Region evaluation. It was determined using measured total cross section data that there is significant structure in the underlying dilute-average cross section within the unresolved resonance energy range of the evaluation (8–40.146 keV). Energy-dependent strength functions are provided to more accurately represent this structure. A covariance matrix for the average parameters that represent the entire Unresolved Resonance Region is provided to comply with the current ENDF-6 format. This new evaluation more closely matches the experimental data available when compared to the current evaluations.

Original language	English
Article number	109751
Journal	Annals of Nuclear Energy
Volume	188
DOIs	https://doi.org/10.1016/j.anucene.2023.109751
State	Published - Aug 2023

Funding

This manuscript has been authored by the Naval Nuclear Laboratory, operated by Fluor Marine Propulsion, LLC under Contract No. 89233018CNR000004 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a nonexclusive, paid-up, irrevocable, world-wide license to publish, distribute, translate, duplicate, exhibit, and perform the published form of this manuscript, or allow others to do so, for United States Government purposes. In addition, this work was also supported by the Nuclear Criticality Safety Program, funded and managed by the National Nuclear Security Administration, United States for the Department of Energy. This manuscript has been authored by the Naval Nuclear Laboratory, operated by Fluor Marine Propulsion, LLC under Contract No. 89233018CNR000004 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a nonexclusive, paid-up, irrevocable, world-wide license to publish, distribute, translate, duplicate, exhibit, and perform the published form of this manuscript, or allow others to do so, for United States Government purposes. In addition, this work was also supported by the Nuclear Criticality Safety Program , funded and managed by the National Nuclear Security Administration, United States for the Department of Energy.

Keywords

Evaluation
Neutron
Resonance
Rhodium
Unresolved

Access to Document

10.1016/j.anucene.2023.109751

Cite this

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title = "A new 103Rh Unresolved Resonance Region evaluation",

abstract = "A new evaluation in the Unresolved Resonance Region has been performed for 103Rh, an important fission product. The evaluation was done in coordination with and is consistent with a new Resolved Resonance Region evaluation. It was determined using measured total cross section data that there is significant structure in the underlying dilute-average cross section within the unresolved resonance energy range of the evaluation (8–40.146 keV). Energy-dependent strength functions are provided to more accurately represent this structure. A covariance matrix for the average parameters that represent the entire Unresolved Resonance Region is provided to comply with the current ENDF-6 format. This new evaluation more closely matches the experimental data available when compared to the current evaluations.",

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