GIANT DIPOLE RADIATION AND ISOSPIN MIXING IN HOT NUCLEI WITH A = 32-60

摘要

High-energy γ-ray spectra from statistical decay of the Giant Dipole Resonance in ~(60)Zn and ~(61)Zn nuclei were measured and analysed. The GDR parameters and the isospin mixing probability for ~(60)Zn at around 50 MeV excitation energy were deduced from both experiments. This result and the previous results obtained for ~(32)S, ~(36)Ar, ~(44)Ti nuclei allowed to establish the dependence of the isospin mixing on the atomic number Z.