Review on the progress in nuclear fission

摘要: An overview is given on some of the main advances in experimental methods, results and theoretical models ideas last years field nuclear fission. New approaches extended availability fissioning systems considerably provided a full identification all fission products A Z for first time. In particular, transition from symmetric to asymmetric around 226Th unexpected structure mass distributions = 80 84 as well an systematics odd-even effect fragment have been measured [A. N. Andreyev et al., Rep. Progr. Phys. 81 (2018) 016301]. Three classes descriptions presently appear be most promising or successful ones: Self-consistent quantum-mechanical fully consider features process. Intense efforts are made develop suitable tools [N. Schunck, L. M. Robledo, Prog. 79 (2016) 116301] modeling non-equilibrium, large-amplitude collective motion leading Stochastic, essentially classical provide developed technical framework. The fission-fragment distribution reproduced mercury fermium beyond [P. M\"oller, J. Randrup, Rev. C 91 (2015) 044316]. alternative semi-empirical approach [K.-H. Schmidt Nucl. Data Sheets 131 107], considerable progress describing observables has achieved by combining several general concepts. This new reveals high degree regularity allows calculating high-quality data with unique parameter set large number excitation-energy range.