Identification of transitions into Rydberg states in the X-ray absorption spectra of condensed long-chain alkanes
✍ Scribed by P.S Bagus; K Weiss; A Schertel; Ch Wöll; W Braun; C Hellwig; C Jung
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 532 KB
- Volume
- 248
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
A detailed theoretical analysis of the high-resolution X-ray absorption spectra of condensed long-chain alkane molecules (hexatriacontane, C36H74 and heptatriacontane, C37H76) suggests that the resonance at 287.7 eV, which is the dominating feature in the near-edge X-ray absorption spectra of saturated long-chain hydrocarbons, is due to transitions into Rydberg states. These findings, which are at variance with the previous interpretation, are corroborated by the identification of a previously unresolved resonance at 288.2 eV in the high-resolution X-ray absorption spectra and of the observation of a strong quenching of the X-ray absorption resonances upon physisorption on a Cu( 111 )-metal surface.