Speaker
Description
The need for accurate nuclear data is crucial for the nuclear power industry, and with the Swedish plans to invest in new Gen IV nuclear power plants, there is a further need for new nuclear data regarding the processes involved in these new reactor concepts. Together with experimental data, simulated nuclear data is an important tool for nuclear research. The nuclear reaction code TALYS has a wide range of capabilities, from medical and astrophysical applications, to the simulation of the nuclear fission process. Currently, TALYS has the option of using simulated fission fragment yields from four different fission codes, which are then de-excited using a sophisticated Hauser-Feshbach model to produce data for fission observables, such as average multiplicities and average energies for prompt neutrons and prompt gammas. The TALYS model can be used as a common tool to de-excite simulated fission fragments in order to benchmark different fission codes against each other, which makes it possible to investigate the effects of different models assumptions, such as fission fragment yield distributions and excitation energy sharing between fragments and how these effects the results for the fission observables. This work investigates the possibility of introducing the nuclear fission code FREYA as an additional fission fragment generator in TALYS by using simulated fission fragment yield files from FREYA in the TALYS evaporation process. The standalone results for the fission observables from the FREYA model are compared to those of the GEF and HF3D models and the results for the fission observables from the TALYS model using FREYA, GEF and HF3D as fission fragment generators are investigated.