Resonant excitation and decay of core holes in condensed layers of furan and pyrrole
Mauerer M, Zebisch P, Weinelt M, Steinrück HP (1993)
Publication Type: Journal article
Publication year: 1993
Journal
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
Abstract
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.
Authors with CRIS profile
Involved external institutions
Max-Planck-Institute of Quantum Optics (MPQ) / Max-Planck-Institut für Quantenoptik
Germany (DE)
Technische Universität München (TUM)
Germany (DE)
Freie Universität Berlin
Germany (DE)
Germany (DE)
Technische Universität München (TUM)
Germany (DE)
Freie Universität Berlin
Germany (DE)
How to cite
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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