Investigation of the α-cluster structure of 22Ne and 22Mg

Abstract

An excitation function for resonance elastic scattering of α particles on 18O and 18Ne was measured using the method of inverse geometry with a very thick target. Spectroscopic information was obtained for 23 levels in the excitation energy region from 11.9 to 13.7 MeV in 22Ne. Twelve of them are new. General features of α-cluster bands in 22Ne are analyzed in the framework of the potential model with a deep potential well. Predictions for the 11- level in 22Ne, as well as for the isotopic shift of the cluster levels in 22Mg, are given. Evidence is presented that new perspectives on the study of nuclear structure and nuclear spectroscopy can be obtained in complimentary measurements of α-cluster states in mirror N ≠ Z nuclei.