TAILIEUCHUNG - Influence of nuclear structure data on fission observables

The aim of this work is to focus on nuclear structure data used at low energy where electromagnetic transitions can be measured. The RIPL3 database linked to the FIFRELIN Monte Carlo code contains such data and their influence on fission observables is reviewed. | Influence of nuclear structure data on fission observables EPJ Nuclear Sci. Technol. 4 28 2018 Nuclear Sciences O. Litaize et al. published by EDP Sciences 2018 amp Technologies https epjn 2018043 Available online at https REGULAR ARTICLE Influence of nuclear structure data on fission observables Olivier Litaize1 Abdelaziz Chebboubi1 Olivier Serot1 Loïc Thulliez1 2 Thomas Materna2 and Michal Rapala1 2 1 CEA DEN Cadarache 13108 Saint-Paul-lez-Durance France 2 IRFU CEA Université Paris-Saclay 91191 Gif-sur-Yvette France Received 5 December 2017 Received in final form 18 May 2018 Accepted 8 June 2018 Abstract. The simulation of the de-excitation of nuclei requires some models and data in order to construct the nuclear level scheme and the associated transition intensities. The aim of this work is to focus on nuclear structure data used at low energy where electromagnetic transitions can be measured. The RIPL3 database linked to the FIFRELIN Monte Carlo code contains such data and their influence on fission observables is reviewed. 1 Introduction sharing between fragments right after scission. In FIFRELIN fission fragments excitation energy and spin The aim of this work is to illustrate the influence of nuclear are estimated by using a mass-dependent temperature structure data on fission observables. To do that we ratio law RT A involving two free parameters and a spin consider a Monte Carlo simulation of the de-excitation cut-off parameter involving one to two additional free of fission fragments by neutron gamma conversion elec- parameters depending on the spin cut-off model . Another tron emission. FIFRELIN 1 2 is a Monte Carlo code free parameter is used for the fragment moment of inertia developed at CEA which offers this capability by relying which is set as a fraction of a spheroid rigid body. Once the on nuclear structure data at low excitations energies initial states of a fragment pair binary fission are known level schemes and transition

• Năng lượng
• Nuclear structure data
• FIFRELIN Monte Carlo code
• De excitation of nuclei
• The RIPL3 database
• Fission fragments excitation energy