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Nucleosynthesis of heavier materials in supernova explosions and neutron star mergers are two cases of problems that I guess are used for "publicly" validating dark codes.

(I know a guy that Los Alamos is trying to recruit to do some dark work for them, and he does nucleosynthesis in neutron star mergers.)

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Those would be useful, but typically the validation codes use terms like "multiscale combustion physics" or "coupled neutron/radiation transport".

I think the folks simulating supernova and neutron stars have a lot of physics overlaps, but I don't think that data is used directly for stockpile stewardship.

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