Giant Dipole Radiation and Isospin Mixing in Highly Excited, Light and Medium Mass Nuclei

We have studied the isospin mixing in self-conjugate nuclei 32S, 36Ar, 44Ti, 60Zn by comparing measured and calculated high-energy -ray spectra from the statistical decay of N=Z and neighboring NZ compound nuclei formed in heavy-ion reactions at similar excitation energies. The isospin mixing probability in those nuclei at excitation energy around 50 MeV was extracted. It seems to increase with increasing A and Z.