Study on neutron scattering in light water

J. P. Scotta (1) , I. M. Damian (2) , G. Noguère (1) , D. Bernard (1)

1 CEA-DES (ex-DEN) - CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire)
2 Centro Atómico Bariloche [Argentine]

It is presented a method to produce covariance matrices of the light water total cross section from thermal scattering laws of the JEFF-3.1.1 nuclear data library and CAB model. The generalized least square method was used to fit the LEAPR module parameters of the processing tool NJOY with light water experimental transmission measurements at 293.6K with CONRAD code. The marginalization technique was applied to account for systematic uncertainties.

Keywords: thermal scattering law; covariance matrix; light water

Domains: Nuclear Experiment [nucl-ex]; Nuclear Theory [nucl-th]

J. P. Scotta, I. M. Damian, G. Noguère, D. Bernard. Study on neutron scattering in light water. WONDER 2015 - 4$^th$ International Workshop on Nuclear Data Evaluation for Reactor Applications, Oct 2015, Aix-En-Provence, France. ⟨hal-02442280⟩