Mixing datasets for thermal scattering data

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Chris Forsyth
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Mixing datasets for thermal scattering data

Post by Chris Forsyth » Thu May 27, 2021 9:52 am

Hello,

I am attempting to use JEFF-3.3 for my thermal scattering data, because it contains many more materials than the default Serpent download (which only has H2O, D2O, and graphite), and I want to use ENDF/B-VII for all of my other data.

However, I just read in another post that you're not supposed to mix different datasets for thermal scattering and other reaction types (i.e., if I want to use JEFF-3.3 for thermal scattering, then I need to use JEFF-3.3 for all my other cross-section data as well).

Is this true? If so, why?

Thanks!

Ana Jambrina
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Re: Mixing datasets for thermal scattering data

Post by Ana Jambrina » Thu May 27, 2021 10:37 pm

In general, for consistency across scattering cross section data, all cross-section libraries should come from the same dataset.
It is possible to use thermal-scattering libraries from different evaluations. E.g. JEFF3.3 thermal scattering library carries out not only new data, but also brings data from other evaluations such JEFF3.2 and ENDF/B-VIII. (However, how those libraries are processed represents a key point in when/how to use them).
- Ana

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