OBSERVATION OF ANOMALOUS BEHAVIOR OF THE XE 4D PHOTOELECTRON SATELLITES

The Xe 4d photoelectron satellites have been studied in the photon ene rgy region 90-200 eV. The substantially improved energy resolution has enabled us to determine a wealth of satellites. A comparison of the s atellite spectra at the intermediate excitation energies to the thresh old-electron and the high-excitation-energy spectra shows the existenc e of several kinds of characteristic photon energy dependences of the Xe 4d satellite intensities. At the intermediate excitation energies, the satellites due to final states of both the 4d(-1)5p(-1)np and 4d(- 1)5p(-1)md,ns (n greater than or equal to 6, m greater than or equal t o 5) configurations occur.