| Zugriffsnummer | 31642 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | High resolution x‐ray absorption spectroscopy of linear hydrocarbons adsorbed on noble metal surfaces |
| Autor(in); Institution |
Rabus, Hans; 9.23, Vakuum-UV-Strahlungsmeßtechnik, PTB-Berlin; Institut für Experimentalphysik, Freie Universität Berlin, GERMANY
Arvanitis, D.; Institut für Experimentalphysik, Freie Universität Berlin, GERMANY
Domke, M.; Institut für Experimentalphysik, Freie Universität Berlin, GERMANY
Baberschke, K.; Institut für Experimentalphysik, Freie Universität Berlin, GERMANY
|
| Quelle/Jahr | Journal of Chemical Physics: 96 (1992), 2, 1560 - 1573 |
| ISSN | 0021-9606 |
| DOI | |
| Freie Schlagworte | Absorption spectra ; Vibration analysis |
| Zusammenfassung | Recent progress in the performance of soft x‐ray monochromators has revealed new features in soft x‐ray molecular photoabsorptionspectra. We present here a comprehensive high resolution x‐ray absorption study on the linear hydrocarbons C2H2n and C2D2n , adsorbed on Ag(100) and Cu(100) at 50 K and in the solid and the gas phase. A line shapeanalysis is given, for the bound as well as for the continuum resonances and the absorption thresholds, by means of models easily accessible to the experimentalist, leading to a quantitative understanding of the observed spectra, including the vibrational envelopes. Changes in intramolecular bond lengths upon core‐hole excitation can be determined and tracked as a function of deuteration and chemisorption. The effects of the substrate bonding on the vibrational envelopes are analyzed. |
