Rotating hyperdeformed states in light nuclear systems

The existence of rotating quasimolecular hyperdeformed states formed in the entrance channel of capture reactions of light nuclei is predicted within a rotational liquid-drop model, including the nuclear proximity energy. The l-dependent capture barrier heights and positions, as well as the angular momentum, the energy, and the moment of inertia ranges of these very deformed high-spin states, are given for the reactions 13C + 13C, 16O + 16O, 28Si + 12C, 28Si + 16O, 24Mg + 24Mg, 28Si + 24Mg, 28Si + 28Si, 28Si + 40Ca, 40Ca + 40Ca, 40Ca + 48Ca, 48Ca + 48Ca, and 58Ni + 58Ni. Analytical formulas are provided for any reaction between light nuclei

Rotating hyperdeformed quasi-molecular states formed in capture of light nuclei and in collision of very heavy ions

International audienceWithin a rotational liquid drop model including the nuclear proximity energy the l-dependent potential barriers governing the capture reactions of light nuclei and of very heavy ions have been determined. Rotating quasi-molecular hyperdeformed states appear at high angular momenta. The energy range of these very deformed high spin states is given for light systems. The same approach explains the observation of ternary cluster decay from56Ni and 60Zn through hyperdeformed shapes at angular momenta around 45 . The apparently observed superheavy nuclear systems in the U+Ni and U+Ge reactions at high excitation energy might correspond to these rotating isomeric states formed at very high angular momenta even though the shell effects vanish