Binary and ternary fission of hot and rotating nuclei

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Abstract
The binary and ternary fission and fusion of hot rotating nuclei have been investigated within the rotational liquid-drop model at finite temperature and including the nuclear proximity energy. The temperature effects are emphasized by the symmetry and mass of the nuclear system due to the modification of the surface tension. With increasing temperature, the fission and fusion barriers decrease and the ridge-line potentials are more accentuated without changing the Businaro-Gallone picture. With increasing mass, the nuclei can support higher angular momenta. Investigation of the ternary fragmentation valley allows one to show that elongated but compact heavy systems can sustain both high temperature and high spin when they are uncompressed, as in peripheral collisions of heavy ions in the intermediate-energy domain.