The TBR Error Bar - Which Cross-Sections Actually Matter

The credible nuclear-data uncertainty on the TBR is set by the light breeding channels — ⁶Li(n,t), ⁷Li(n,n't), ⁹Be(n,2n) show a 55–66% TALYS-vs-ENDF model spread at 14 MeV, against ~15% for heavy structural channels. The load-bearing light channels must come from evaluated covariances, not model defaults.

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Publication Details

Journal
Zenodo (CERN European Organization for Nuclear Research)
Published
2026-08-28
DOI
https://doi.org/10.5281/zenodo.22132199
Primary Topic
Nuclear reactor physics and engineering
Type
preprint
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preprint

The TBR Error Bar - Which Cross-Sections Actually Matter

Priyanca Ford
Zenodo (CERN European Organization for Nuclear Research)
Nuclear reactor physics and engineering
preprint

The TBR Error Bar - Which Cross-Sections Actually Matter

Priyanca Ford
preprint en

Abstract

The credible nuclear-data uncertainty on the TBR is set by the light breeding channels — ⁶Li(n,t), ⁷Li(n,n't), ⁹Be(n,2n) show a 55–66% TALYS-vs-ENDF model spread at 14 MeV, against ~15% for heavy structural channels. The load-bearing light channels must come from evaluated covariances, not model defaults.

Zenodo (CERN European Organization for Nuclear Research)
Fusion for Energy (ES)
Nuclear reactor physics and engineering
DOIOpen Access PDFOpenAlex
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