Shell evolution in light nuclei inferred from transfer reactions Original Research Article

Recent results on shell evolution in light exotic nuclei obtained through experiments performed at GANIL using the MUST2 particle array are reported. The one-nucleon transfer reactions 20O(d,t) was investigated using a setup combining the MUST2 and TIARA particle arrays, together with EXOGAM germanium detectors. Preliminary results on the populated states as well as comparison with calculated spectroscopic factors are presented. In a second study, the Z=8 shell closure was investigated by means of the two-neutron transfer reaction 14O(p,t) using a set of MUST2 telescopes. A newly observed state at low excitation energy in the unbound 12O points to the Z=8 shell quenching, analogously to the established case at N=8 in the neutron-rich mirror nucleus 12Be.