Dynamical relativistic effects in photoionization: Spin-orbit-resolved angular distributions of xenon 4d photoelectrons near the cooper minimum - art. no. 123004

Two decades ago, it was predicted [Y S. Kim et al., Phys. Rev. Lett. 46, 13 26 (1981)] that relativistic effects should alter the dynamics of the photo ionization process in. the vicinity of Cooper minima. The present experimen tal and theoretical study of the angular distributions of Xe 4d(3/2) and 4d (5/2) photoelectrons demonstrates this effect for the first time. The resul ts clearly imply that relativistic effects are likely to be important for i ntermediate-Z atoms at most energies.