Energy features of fissile nuclei at the scission point for various fission modes

Mass-spectroscopicdata on the yields of heavy products originating from the thermal-neutron-induced fission of 235U nuclei are presented over broad ranges of mass numbers A (125 ⩽ A ⩽ 155), kinetic energies E k (40 ⩽ E k ⩽ 80 MeV), and effective ion charges z* (18 ⩽ z* ⩽ 29). The potential energy of a fissile system at the scission point is analyzed with allowance for the positions of the minima that correspond to the most probable ways of separation of the system for the standard (S2) and superasymmetric (S3) fission modes.