Mauerer M, Zebisch P, Weinelt M, Steinrück HP (1993)
Publication Type: Journal article
Publication year: 1993
Original Authors: Mauerer M., Zebisch P., Weinelt M., Steinrück H.-P.
Publisher: American Institute of Physics (AIP)
Book Volume: 99
Pages Range: 3343-3352
Journal Issue: 5
DOI: 10.1063/1.465144
Near edge x-ray absorption spectra and decay electron spectra for resonant and nonresortant excitations in the C 1s and N 1s regions have been measured for condensed furan (CHO) and pyrrole (CH NH) layers. The decay spectra after resonant excitation into the lowest unoccupied orbital (π*) are pure autoionization spectra. The participant channels show strong resonant enhancements of the photoelectron peaks, in particular after excitation of the C 1s core electrons. Overall however, the spectra are dominated by the spectator channels. The spectator spectra resemble the normal Auger spectra shifted by spectator shifts of ≈4 eV for furan and ≈2.5 eV for pyrrole. For furan the participant spectra for excitation at the two different carbon atoms show significant differences that can be qualitatively understood in terms of a simple one-electron picture by considering the localization of the corresponding orbitals on the core hole. The decay spectra after excitation into the π* orbital show negligible enhancement of the participant channel, a strongly reduced spectator shift, and less-pronounced structures than at higher photon energies. The latter is attributed to a competition of spectator decay and normal Auger decay after internal photoionization into Rydberg derived bands in the condensate. For excitations into the σ*-resonances pure Auger spectra are observed, indicating that these resonances fully ionize before core decay takes place. © 1993 American Institute of Physics.
APA:
Mauerer, M., Zebisch, P., Weinelt, M., & Steinrück, H.-P. (1993). Resonant excitation and decay of core holes in condensed layers of furan and pyrrole. Journal of Chemical Physics, 99(5), 3343-3352. https://doi.org/10.1063/1.465144
MLA:
Mauerer, M., et al. "Resonant excitation and decay of core holes in condensed layers of furan and pyrrole." Journal of Chemical Physics 99.5 (1993): 3343-3352.
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