Abstract
The high-resolution Si L 23-edge X-ray absorption near-edge structure (XANES) total electron yield (TEY) spectrum and Cl + photon-stimulated ion desorption (PSID) spectrum of condensed SiCl 4 have been measured in the energy range 102–115 eV. The CI + PSID spectrum exhibits higher intensities than the TEY for the higher-energy peaks near 110 eV in the XANES spectrum of condensed SiCl, We assigned most of these higher-energy peaks to excitations of the Si 2p electron to Rydberg orbitals. The enhanced PSID intensities of Rydberg transitions originate from the lower degree of coordination of surface molecules. The non-statistical branching ratio in the L 3 L 2 intensity is explained by the presence of the exchange interaction between the core hole with the excited electron. Due to the reduced electron-core exchange energy in the solid, the solid-bulk TEY and solid-surface Cl + PSID spectra exhibit a larger L 3 L 2 intensity ratio than the gas-phase absorption spectrum.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.