Accession Number:

ADA285374

Title:

Identification of Resonant, Two-Electron, and Inter-Atomic Features in K and L(sub23) NEXAFS Spectra

Descriptive Note:

Technical rept. Sep 1993-Oct 1994

Corporate Author:

GEORGE WASHINGTON UNIV WASHINGTON DC DEPT OF CHEMISTRY

Report Date:

1994-09-01

Pagination or Media Count:

9.0

Abstract:

Experimental Cl K NEXAFS spectra for Cl-hydrated in H20, and on passivated Al electrodes below and above the pitting potential have widely different spectral line shapes. Experimental K-and L23-edge NEXAFS data for the alkali halides and rare gas solids are compared with FEFF6 calculated results to optimize code input parameters, test code validity, and identify many-body features in these model systems. Differences are shown to arise from many-body shake-up and charge-transfer excitations. Although relatively small in the model spectra, the latter interatomic excitations are believed to be primarily responsible for the different Cl-line shapes on the passivated Al electrodes. NEXAFS, Shake satellites, X-Ray absorption, Alkali halides, Rare gases.

Subject Categories:

  • Inorganic Chemistry
  • Electricity and Magnetism
  • Atomic and Molecular Physics and Spectroscopy
  • Quantum Theory and Relativity

Distribution Statement:

APPROVED FOR PUBLIC RELEASE