tailieunhanh - Resonance parameter and covariance evaluation for 16O up to 6 MeV

The intent of this paper is to describe the procedures used in the evaluation of the RP and RPC, the use of the RPC in benchmark calculations and to assess the impact of the 16O nuclear data uncertainties in the calculate dkeff for critical benchmark experiments. | Resonance parameter and covariance evaluation for 16O up to 6 MeV EPJ Nuclear Sci. Technol. 2 43 2016 Nuclear Sciences L. Leal et al. published by EDP Sciences 2016 amp Technologies DOI epjn 2016036 Available online at http REGULAR ARTICLE 16 Resonance parameter and covariance evaluation for O up to 6 MeV Luiz Leal1 Evgeny Ivanov1 Gilles Noguere2 Arjan Plompen3 and Stefan Kopecky3 1 Institut de Radioprotection et de Sûreté Nucléaire IRSN PSN-EXP SNC 92262 Fontenay-aux-Roses France 2 CEA DEN DER Cadarache 13108 Saint Paul les Durance France 3 European Commission Joint Research Centre Institute for Reference Materials and Measurements Retieseweg 111 2440 Geel Belgium Received 6 June 2016 Received in final form 5 September 2016 Accepted 11 October 2016 Abstract. A resolved resonance evaluation was performed for 16O in the energy range 0 eV to 6 MeV using the computer code SAMMY resulting in a set of resonance parameters RPs that describes well the experimental data used in the evaluation. A RP covariance matrix RPC was also generated. The RP were converted to the evaluated nuclear data file format using the R-Matrix Limited format and the compact format was used to represent the RPC. In contrast to the customary use of RP which are frequently intended for the generation of total capture and scattering cross sections only the present RP evaluation permits the computation of angle dependent cross sections. Furthermore the RPs are capable of representing the n a cross section from the energy threshold MeV of the n a reaction to 6 MeV. The intent of this paper is to describe the procedures used in the evaluation of the RP and RPC the use of the RPC in benchmark calculations and to assess the impact of the 16O nuclear data uncertainties in the calculate dkeff for critical benchmark experiments. 1 Introduction The purpose of this paper is to briefly describe the procedures used in the evaluation of the 16O cross section Numerous applications in .