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njoy / NJOY21

NJOY for the 21st Century
https://www.njoy21.io/NJOY21
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MF35 does not process if MF34 is processed #139

Open sombrereau opened 3 years ago

sombrereau commented 3 years ago

In reference to discussion about calculating angular distributions in Pu239 with ENDFVIII data

NJOY's errorr module WILL produce a MF35 covariance tape if the errorr module called before the errorr call to produce a MF34 (case the works), but WILL NOT if the call to produce a MF34 covariance tape if called before the call to produce a MF35 covariance tape (case that does not work).

I've attached the input decks to this message and I'm using ENDFVIII data downloaded from the IAEA website

weird.

sombrereau commented 3 years ago

This behavior happens with Pu242 -- which is strange because you also need to add the additional reactions to resolve a -- no information for mt251 issue, similar to the Pu239 nuclear data. Maybe important ... maybe a red herring?