Nuclear Fission Dynamics: Past, Present, Needs, and Future

摘要: Significant progress in the understanding of fission process within a microscopic framework has been recently reported. Even though complete description this important nuclear reaction remains computationally demanding task, recent developments theoretical modeling and computational power have brought current simulations to point where they can provide guidance constraints phenomenological models, without making recourse parameters. An accurate treatment compatible with our inter-nucleon interactions should be able describe real-time dynamics fissioning system could justify or rule out assumptions approximations incompatible underlying universally accepted quantum-mechanical framework. Of particular importance are applications observables that cannot directly measured experimental setups (such as angular momentum distribution fragments, excitation energy sharing between nuclei formed during $r$-process), their dependence system. if predictions not reach, being extract trends increasing is various applications. The most advanced do support widely used assumption adiabaticity large amplitude collective motion fission, for trajectories from outer saddle towards scission configuration. Hence, potential surface inertia tensor, which essential elements many simplified approaches, become irrelevant. In reality, slower than case pure adiabatic by factor three four times strongly overdamped. fragment properties defined only after full separation, while approaches no separation achieved, increases uncertainties describing fission-related such methods