The effect of α-clustering of heavy fragment in scission configurations on the mass, charge, neutron multiplicity, and total kinetic energy distributions of fragments of spontaneous fission of 256,258Fm is simultaneously considered within the improved scission model. Predictions for some observables are presented that may be experimentally verified. The origin of the total kinetic energy distribution modes is revealed. The physical nature of the superlong mode is proposed.

Inviter: Xiang-Xiang Sun