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Request to add script for finding branching ratio values #89

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Request to add script for finding branching ratio values#89

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@shimwell
shimwell
opened on Jan 4, 2024

I've been looking into producing some branching ratios similar to this pwr and this sfr but for a DT fusion spectra.

I notice on the openmc.org website that the ENDF/B-VIII.0 Chain (Fast Spectrum) section says

"Branching ratios were computed by tallying total capture reaction rates, capture to ground, and capture to metastable states for specific isotopes. The effective branching ratios were taken to be the ratio of reactions to ground to total number of capture reactions for each isotope."

Is there an openmc simulation script that finds these numbers. I guess it would be similar to this Serpent input file but an openmc version.

Looking at the reaction MT numbers available in OpenMC it looks like we don't have an equivalent to 102g and 102m which Serpent has for radioactive capture to ground and isomeric states, respectively.

It looks like others are also interested in this reproducibility (forum link)

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