Auger decay of the C 1s{sup {minus}1}2{pi}{sup {asterisk}} resonance in carbon monoxide: Vibrationally and angularly resolved spectra
- Department of Physics, Western Michigan University, Kalamazoo, Michigan 49008-5151 (United States)
- Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720 (United States)
- Theoretical Chemistry, Ruhr-University Bochum, D-44780 Bochum (Germany)
Auger electron spectra from the decay of the {nu}=0, 1, and 2 levels of the C 1s{sup {minus}1}2{pi}{sup {asterisk}} state were measured with sufficiently high electron and photon energy resolution to completely resolve the vibrational structure of the final electronic states. The results are compared with {ital ab initio} calculations with emphasis on the analysis of the spectator Auger transitions. The anisotropy parameters extracted from angle-resolved spectra show variations within the vibrational envelopes of the participator Auger decay and exhibit a complex oscillating behavior for the spectator Auger transitions. In addition, two-dimensional (2D) imaging of the electron emission across the C 1s{sup {minus}1}2{pi}{sup {asterisk}} resonance was performed. The ratio of resonant and nonresonant ionization processes is estimated from the 2D map. Strong vibrational lifetime interference effects apparent in the 2D imaging are discussed. {copyright} {ital 1999 American Institute of Physics.}
- OSTI ID:
- 690695
- Journal Information:
- Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 21 Vol. 111; ISSN JCPSA6; ISSN 0021-9606
- Country of Publication:
- United States
- Language:
- English
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