Low-lying levels in Cu and Zn isotopes

Abstract

The low-lying levels of Cu and Zn isotopes were excited with 2.0--4.5 MeV proton beam. The deexcited \ensuremath{\gamma} rays from these levels were detected and identified in the singles spectra recorded with a 57 c.c. Ge(Li) detector. The safe energies for Coulomb excitation process with protons for these nuclei have been determined from the relative contributions of compound nucleus formation and Coulomb excitation cross sections. The reliable values of transition probabilities for the low-lying levels have also been measured by Coulomb excitation technique using safe bombarding energies. The present results have been compared with the reported measurements and various nuclear model calculations.