CO ADSORPTION ON ION-BOMBARDED NI(111) - CHARACTERIZATION BY PHOTOEMISSION FROM ADSORBED XENON

被引：5

作者：

FU, SS ^{[1
]}

MALAFSKY, GP ^{[1
]}

HSU, DSY ^{[1
]}

机构：

[1] USN,RES LAB,DIV CHEM,WASHINGTON,DC 20375

来源：

SURFACE SCIENCE | 1993年 / 297卷 / 02期

关键词：

D O I：

10.1016/0039-6028(93)90260-Q

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 adsorption of CO on Ni(111), ion bombarded with various fluences of 1.0 keV Ar+ ions, has been investigated using photoemission from adsorbed xenon (PAX). After ion bombardment of the Ni(111) surface, various amounts of CO were adsorbed, followed by adsorption of xenon at 85 K, Two pressures of xenon were used in examining the 3d5/2 peak of xenon: 5 x 10(-6) and 7 X 10(-10) Torr. PAX data taken at both pressures show that CO selectively adsorbs onto the defect (step) sites created by ion bombardment. In addition, it was found that the amount of CO which could occupy a defect site previously occupied by one Xe atom varied from 10 to 2.5, depending on the ion fluence.

引用

页码：167 / 174

页数：8