Electron-ion coincidence study for the TiO2(110) surface

被引：14
|
作者：
Tanaka, S [1 ]
Mase, K [1 ]
Nagasono, M [1 ]
Nagaoka, S [1 ]
Kamada, M [1 ]
机构：
[1] Inst Mol Sci, Okazaki, Aichi 4448585, Japan
来源：
SURFACE SCIENCE | 2000年 / 451卷 / 1-3期
关键词：
desorption induced by electronic transitions (DIET); single crystal surfaces; synchrotron radiation photoelectron; spectroscopy; titanium oxide;
D O I：
10.1016/S0039-6028(00)00025-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：
Photo-stimulated desorption from the TiO2(110) surface was investigated by using electron-ion coincidence spectroscopy and synchrotron radiation. The desorption of O+ ions was observed to be coincident with the emission of photoelectrons from the O 1s, Ti 2s, Ti 2p, Ti 3s and Ti 3p levels, and their satellite peaks due to the shake-up excitation. However, no ion desorption was observed in coincidence with the O 2s or valence photoelectrons. The O+ peak intensities in the coincidence spectra are analyzed, and the result is unexpected from a simple expansion of the Knotek-Feibelman model. The shake-up excitation of O 1s levels yields O+ desorption more efficiently than does the O 1s single-electron excitation. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：182 / 187
页数：6
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