Nuclear Fission Modelling with SPY

A precise knowledge of the impact of the compound nucleus characteristics on fission fragments properties like fission yield or kinetic energy is a big challenge. Since we are not able to track a nucleus splitting from compound nucleus to the fragments formation, we need a theoretical laboratory to study the fission mechanism and to have access to the correlation between the fragments properties and their nuclear structure, such as shell correction, pairing or collective degrees of freedom. To bring some answers, a new model named SPY (Scission Point Yields) has been developed to determine fission fragments characteristics using a statistical description of the fission process at the scission point. The most important property of the model relies on the nuclear structure of the fragments which is derived from full quantum microscopic calculations. This approach allows computing the fission final state of extremely exotic nuclei which are inaccessible by most of the fission model available on the market.