DETERMINATION OF SURFACE GEOMETRIES FROM ANGULAR-DISTRIBUTIONS OF DEEP-CORE-LEVEL X-RAY PHOTO-ELECTRONS

被引：30

作者：

FADLEY, CS ^{[1
]}

KONO, S ^{[1
]}

PETERSSON, LG ^{[1
]}

GOLDBERG, SM ^{[1
]}

HALL, NFT ^{[1
]}

LLOYD, JT ^{[1
]}

HUSSAIN, Z ^{[1
]}

机构：

[1] UNIV HAWAII,DEPT CHEM,HONOLULU,HI 96822

来源：

SURFACE SCIENCE | 1979年 / 89卷 / 1-3期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0039-6028(79)90592-2

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：

Significant anisotropies are found in deep-core-level X-ray photoemission from adsorbates, specifically c(2 × 2)O on Cu(001) and c(2 × 2)CO on Ni(001). The magnitudes are approximately Imaximum/Ibackground = 1.3-1.5. These effects are found to be due to low-angle surface scattering for O 1s emission from adsorbed O and intra-molecular forward scattering for C 1s emission from CO. A single-scattering theoretical model is found to well predict the observed effects, and this permits deriving new information concerning the bonding geometries of these adsorbates: that c(2 × 2)O has a fourfolf, in-plane geometry on Cu(001) and that c(2 × 2)CO has an average orientation within 12° of normal on Ni(001). The general use of such measurements for surface structural determinations is thus suggested. © 1979.

引用

页码：52 / 63

页数：12

共 23 条

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