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Comparison between optically excited and electron-excited transitions above oxygen and nitrogen K edges in Cu 2 O, O/Al, O/Ni, SiO </…

1988; American Physical Society; Volume: 38; Issue: 18 Linguagem: Inglês

10.1103/physrevb.38.13355

1095-3795

F. Della Valle, Giovanni Comelli, Franco Zanini, R. Rosei, G. Paolucci,

Analytical Chemistry and Sensors

We compare transitions observed in photoabsorption spectra above the oxygen and nitrogen K edges in several compounds and chemisorption systems with transitions excited by the process of electron-energy loss detected in the reflection mode. We find few but significant discrepancies between the two, mainly attributable to quadrupole transitions and double inelastic scattering in the electron-energy-loss spectra. The problem of the extraction of structural information from the measurements is considered.