Orateur
Description
The complete microscopic description of the fission process is still a challenge for nuclear theory. Density functional theory (DFT) and Time-Dependent DFT are tools of choice to describe fission. However, it can be difficult to extract information about the fragments that are needed for comparison with experience or as input for the r-process model.
In this presentation, I will discuss the recent progress that has been made on the description of the properties of the fragments. I will show how the octupole shape of the fission fragment at the scission plays a role to determine the asymmetry [1]. How we can determine the distribution of charge and mass of the fission fragments using the projection technique in the time-dependent generator coordinate method (TDGCM) [2]. Important progress has also been made in the determination of the spin of the fragments using particle projection on the angular momentum in static and dynamical approaches [3,4]. A model that describes directly the fission starting from the fission fragments is the scission-point model [5], I will discuss recent advances and the possibility to include the octupole degree of freedom in the model using machine learning.
[1] G. Scamps and C. Simenel, Nature 564, 382 (2018).
[2] M Verriere, N Schunck, D Regnier, Phys. Rev. C 103, 054602 (2021).
[3] G. F. Bertsch,T. Kawano, and L. M. Robledo, Phys. Rev. C 99, 034603 (2019).
[4] A. Bulgac, et al., Phys. Rev. Lett. 126, 142502 (2021).
[5] J.-F. Lemaître, S. Goriely, S. Hilaire, J.-L. Sida, Phys. Rev. C 99, 034612 (2019).
