The photoneutron cross section of 151Eu, 153Eu and 156Gd in the giant resonance region

Abstract

The 151Eu, 153Eu and 156Gd photoneutron cross sections in the giant dipole resonance region have been measured using bremsstrahlung from the University of Melbourne betatron. Absolute cross-section values, lorentzian parameters, intrinsic quadrupole moments, deformation parameters and integrated cross-section values are derived. For 151Eu and 153Eu the measured cross sections are in good agreement with the predictions of the extended dynamic collective model.