Fourier-over-spheroid shape parametrization applied to nuclear fission dynamics

We propose a new, rapidly convergent shape parametrization, the so-called Fourier-over-spheroid (FoS) approach, to model fission of heavy nuclei. Four collective coordinates are used characterize fissioning system: its elongation, left-right asymmetry, neck size, and nonaxiality. The potential energy landscape is computed within macroscopic-microscopic on top which multidimensional Langevin equation solved describe dynamics. Charge equilibration at scission deexcitation primary fragments after further considered. gives access wide variety observables, including fragments' mass, charge, kinetic yields, fragment mean $N/Z$ postscission neutron multiplicities, and, importantly, their correlations. latter crucial unravel complexity process. parameters were tuned reproduce experimental observation from thermal neutron-induced $^{235}\mathrm{U}$, next discuss transition asymmetric symmetric along Fm isotopic chain.