Présidents de session
Uncertainties and propagation
- Marc Verrière (CEA)
This talk will present recent developments in uncertainty quantification at the IAEA Nuclear Data Section and discuss perspectives on areas that may be worthwhile to pursue in the future.
Optical potentials (OMPs) have been a workhorse reaction theory tool for more than sixty years, but only in the last decade has OMP uncertainty quantification (UQ) made major strides. This stock-take will review OMP UQ across three avenues: improving training methodology for phenomenological OMPs, incorporating complementary reaction data for OMP training and testing, and broadening scope away...
This presentation will summarize the impact of microscopic cross section calculations, performed with TALYS, on criticality benchmark calculations. It is a follow up of the previous work presented in NPA1054(2025)122979 applied to Pu239(n,f) (only), and generalizing the previous application to more actinides and cross sections. This helps to quantify our current knowledge without adjustment...
Nuclear applications require a continuous improvement of nuclear data, in particular for the fission yields involved in a large time-scale calculations of reactor physics observables. Then,this time-scale requires a consistency between independent and cumulative yields. The Laboratory of Physics Studies (LEPh) of CEA Cadarache has developed a new methodology for the evaluation of fission...
