TOF-ESDIAD measurements of a coadsorbate system: CO on an oxidized Cu(110) surface

被引：11

作者：

Ahner, J

Mocuta, D

Yates, JT

机构：

[1] UNIV PITTSBURGH,DEPT CHEM,CTR SURFACE SCI,PITTSBURGH,PA 15260

[2] UNIV PITTSBURGH,DEPT PHYS & ASTRON,PITTSBURGH,PA 15260

来源：

SURFACE SCIENCE | 1997年 / 390卷 / 1-3期

关键词：

adatoms; angle resolved DIET; carbon monoxide; chemisorption; copper; desorption induced by electronic transitions (DIET); electron stimulated desorption; low index single crystal surfaces; oxygen; vibrations of adsorbed molecules;

D O I：

10.1016/S0039-6028(97)00529-3

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：

A novel time-of-flight-electron-stimulated desorption ion angular distribution (ESDIAD) instrument has been used to investigate the striped structure of the oxidized Cu(110) surface and its interaction with coadsorbed CO. Two different oxygen sites were detected, leading to a two-fold symmetrical four-beam O+ ESDIAD pattern with tilting of the beams of 22 degrees in the [1(1) over bar0$]- and 8 degrees in the [001]-azimuth directions. By time-of-flight separation of ions and excited neutrals with different masses. permitting the simultaneous detection of the momentum resolved ESDIAD pattern of O+ and CO*, a strong interaction of the CO with oxygen atoms chemisorbed on the stripe edges was observed as seen by the behavior of O+ beams originating from these edge sites. (C) 1997 Elsevier Science B.V.

引用

页码：126 / 131

页数：6

共 24 条

[1] Dynamics and structure of chemisorbed CO on Cu(110): An electron-stimulated desorption ion angular distribution study [J].