Strongly enhanced quadrupole deformation in a class of N≈ Z nuclei driven by large-scale clustering? *

Abstract

Abstract The formation of large size clusters, and/or their relative motion as a possible excitation mode, are suggested to be closely related to the origin of deformation in specific cases, namely the case of two doubly-magic clusters or two clusters with nearby characterization. New lifetime data in N = Z 76Sr and 80Zr leading to large B(E2) values are reproduced consistently and well within this approach, along with data for a few neighboring N Z nuclei. These results are compared to previous studies of 32S and 20Ne and all of them support the ideas of the large-scale cluster approach.