2023/02/28 by Satoshi Kosugi, Fumihiro Koike, Masatomi Iizawa +10 · 1 voice
Materials Science · Physics and Astronomy · #Advanced Chemical Physics Studies #Atomic and Molecular Physics #Electron and X-Ray Spectroscopy Techniques
paper · doi:10.1103/physreva.107.022814
openalex publication_date 2023/02/28 · openalex created_date 2023/03/01 · openalex updated_date 2026/07/30
High-resolution photoelectron spectra of xenon (Xe) were measured in the 4p photoionization region. The anisotropy parameters \ensuremathβ were obtained for several photoelectron peaks with angle-resolved photoelectron measurements. The various complicated spectral features were observed due to the perturbed 4p^\ensuremath-1 spin-orbit doublet and adjacent satellite structures. An analysis based on a relativistic multiconfiguration calculation has been carried out. The key role of the strong interactions between the 4p^\ensuremath-1 core hole and the 4d^\ensuremath-2nl configurations has been investigated in detail. Experimental peak energies and intensities are in good agreement with theory. We find that the many of the complicated features are 4d^\ensuremath-2nl satellite lines, and their intensities are determined mostly by the amount of 4p^\ensuremath-1 configurations that are mixed in. The experimental \ensuremathβ values agree quite well with theory, indicating that the photoelectron angular distributions are also strongly influenced by the 4p direct-ionization contributions.