Franck-Condon breakdown in core-level photoelectron spectroscopy of chemisorbed CO

被引：18

作者：

Föhlisch, A

Hasselström, J

Karis, O

Väterlein, P

Mårtensson, N

Nilsson, A

Heske, C

Stichler, M

Keller, C

Wurth, W

Menzel, D

机构：

[1] Univ Uppsala, Dept Phys, S-75121 Uppsala, Sweden

[2] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

[3] Tech Univ Munich, Phys Dept E20, D-85747 Garching, Germany

来源：

CHEMICAL PHYSICS LETTERS | 1999年 / 315卷 / 3-4期

关键词：

D O I：

10.1016/S0009-2614(99)01194-X

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The photon energy dependence of the vibrational fine structure in the Cls and Ols X-ray photoelectron main lines of chemisorbed CO on Ni(100) and Ru(0001) has been measured from 6 to 150 eV above the core-level thresholds. Significant deviations from the behavior in gas-phase CO are found. A strong dominance of the adiabatic peak towards threshold is found for the Cls, but not the Ols, lines. In the Cls lines, we observe a broad maximum of vibrational excitation 5 eV above the shape resonance. At high photon energies, Franck-Condon behavior is observed in both the Cls and Ols lines. This behavior is discussed in terms of the adsorbate electronic structure and the dynamic metallic screening upon core ionization. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：194 / 200

页数：7

共 25 条

[1] STRUCTURE OF CO ADSORBED ON CU(100) AND NI(100) [J].