Speaker
Prof.
Helmut Leeb
(Atominstitut, TU Wien)
Description
In spring 2010 a Full Bayesian Evaluation of neutron-induced reactions on Mn-55 in the energy range between 5 and 150 MeV was presented. This evaluation was based on a prior, which included the effect of parameter uncertainties and for the first time also model defects. It turned out that the latter have a remarkable impact on the final evaluation although only a first coarse approach has been implemented.
In this contribution we present recent refinements of the formulation of the model defects and their impact on the final evaluation of Mn-55 data. One major development concerns more realistic extrapolations of model defects into regions without experimental data. Thus some artefacts of the previous evaluation could be eliminated or at least reduced in size. In addition, the model space for parameter uncertainties has been increased in order to obtain more reliably estimated uncertainties for reactions responsible for gas production and thus for embrittlement of structural materials. The impact of these improvements on the evaluation of Mn-55 will be discussed.
Work partly supported by the F4E project F4E-GRT-014.The views and opinions expressed herein do not necessarily reflect those of the European commission.
Author
Prof.
Helmut Leeb
(Atominstitut, TU Wien)
Co-authors
Ms
Denise Neudecker
(Atominstitut, TU Wien)
Mr
Stefan Gundacker
(Atominstitut, TU Wien)
Mr
Thomas Srdinko
(Atominstitut, TU Wien)
Dr
Volker Wildpaner
(Atominstitut, TU Wien)
