Electromagnetic decay of the giant quadrupole resonances. Pt. 2

We analyze experiments on the electromagnetic decay of the GQR from the point of view of the microscopic theory of the nuclear structure. The calculations are made systematically in the lowest contributing order of perturbation theory within the NFT formalism. Care is taken in order to prevent spurious mixing of the isoscalar and isovector parts of dipole operators. As in previous theoretical calculations, the results are consistent with the experimental limit of the ratio between the transition populating the 2.62 MeV 3- state and the g.s. However they fail to reproduce the strong dipole transition to the 4.97 MeV 3- state. (orig.)