抄録
Recent experimental investigations are pointing to the existence of a new type of nuclear phenomenon which consists in the formation of a long living molecule during the cold fragmentation of 252Cf. For such long times it is possible that the nuclear molecules rotate and vibrate like atomic molecules making thus possible the study of a new type of spectroscopy. We present in this paper the basic ideas which are leading to the calculation of rotational and vibrational bands of three-clusters molecules.
