ANGULAR-DISTRIBUTIONS OF THE C(1S) PHOTOELECTRON SATELLITES IN CO

Angle-resolved high-resolution photoelectron spectra of CO C 1s satell ite lines were taken at a photon energy of 330 eV. The observed angula r distributions assist in identifying the correlation effects which le ad to the formation of different satellite lines, confirming recent th eoretical and experimental results on this topic. Four conjugate shake -up satellite lines with beta = 0 were observed, leading to a strongly aligned core-excited state in the molecular ion. These states decay a nisotropically via participator Auger transitions, which carry along t he angular momentum of the ionized core to double-hole final states. W e present the first clear identification of the initial states of thes e recently observed K-shell satellite Anger transitions with pronounce d decay anisotropy.