The giant dipole resonance (GDR) in odd-mass <SUP>181-195</SUP>Pt nuclei

This manuscript theoretically examines the Giant Dipole Resonance (GDR) in odd-mass Pt181-195 nuclei with the Translational and Galileo Invariant Qusiparticle Phonon Nuclear Model (TGI-QPNM) for the first time. TGI-QPNM includes axially symmetric Woods-Saxon potential, isovector dipole-dipole interaction and restoration forces for spontaneously broken Galilean and Translation symmetries of the nuclear Hamiltonian. Therefore, TGI-QPNM makes eliminating the spurious contributions in the E1 spectrum possible. The obtained results show that the odd-mass Pt181-195 isotopes have a two-peak structure. In Pt181-187 isotopes, while the second peak is higher than the first, in Pt189-195 isotopes, it's the opposite. The photo-absorption result for the Pt-195 is in reasonably good agreement with the experimental data.