Energy-dependent polarization study of the x-ray magnetic scattering in terbium metal

A detailed study of the x-ray magnetic scattering from Tb has been performed, including polarization analysis of the scattered intensity as a function of energy close to the L-II and L-III absorption edges. Large enhancements of the magnetic signal are observed at these energies. It is found that the enhancement at the L-III edge is consistent with a simple dipole transition model, whereas the enhancement at the L-II edge shows an anomalous similar to 5 eV splitting. The angular and polarization dependences of this resonance are investigated, and various explanations are discussed