Abstract
Hindered or favoured transitions have been experimentally detected in cluster radioactivity of odd-mass nuclei, in a similar way to what has been previously observed in spontaneous fission or in the fine structure ofα-decay. By combining the experimental study with a suitable theoretical description one can develop a powerful method to get direct spectroscopic informations on the deformed states of emitting nuclei. We are analyzing the possibility to explain within a superasymmetric fission model why the14C transition from223Ra toward the first excited state of209Pb is stronger than that toward its ground state.
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