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njoy / NJOY2016

Nuclear data processing with legacy NJOY
https://www.njoy21.io/NJOY2016
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ERRORR results for ENDF-VIII n + Ca40 are unphysical #111

Closed mattooca closed 2 years ago

mattooca commented 5 years ago

ERRORR produces very high uncertainties from the new ENDF-VIII Ca40 evaluation. Per discussion with the evaluator (M. Pigni at ORNL), it sounds like these may be due to an NJOY processing problem rather than a problem in the evaluation.

Ca40 provides MF=32 for LRF=7 resonances, including (n,p) and (n,a) channels. AMPX results are very different from NJOY, showing ~10-20% uncertainty for thermal capture where NJOY reports ~10000%.

Processing was done with njoy 2016.44 (master branch, updated today). Input file: xnjoy.input.txt

mt1_xsc mt2_xsc mt102_xsc mt600_xsc mt800_xsc

jlconlin commented 5 years ago

Thanks @mattooca We'll take a look at this.

whaeck commented 5 years ago

We already encountered an issue with this evaluation, see #60. I am looking at it right now to see what is going on.