Anomaly in weakly bound 7Li nucleus in the field of 208Pb target

Abstract

We have investigated the threshold anomaly observed in 7Li + [Formula: see text]Pb nuclear system by analyzing the available 7Li+[Formula: see text]Pb experimental angular distribution measurements. The experimental data for the weakly bound 7Li ions elastically scattered from [Formula: see text]Pb target at 13 energy sets ranging from 25.67 and up to 68[Formula: see text]MeV are subjected to detailed analysis using different interaction potentials created either based on phenomenological, semimicroscopic and microscopic models. The loosely bound nucleus 7Li, possessing a predominant [Formula: see text] cluster structure at 2.468[Formula: see text]MeV, is a good candidate as its break-up reaction studies would help to understand the break-up of the weakly bound unstable radioactive isotopes. In order to observe the break-up effect, reaction cross-sections are extracted and compared with the previously reported ones.