THERMAL FIELD DESORPTION SPECTROSCOPY OF CHEMISORBED HYDROGEN FOR A SINGLE-STEP SITE

被引：11

作者：

ERNST, N ^{[1
]}

BLOCK, JH ^{[1
]}

KREUZER, HJ ^{[1
]}

YE, X ^{[1
]}

机构：

[1] DALHOUSIE UNIV,DEPT PHYS,HALIFAX B3H 3J5,NS,CANADA

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 71卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.71.891

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The steady state molecular hydrogen ion yield from a single atomic step site of a [110]-oriented tungsten and of a [100]-oriented rhodium crystal is determined as a function of surface temperature using mass and energy resolved probe hole field ion microscopy. A second order kinetic model is developed to fit the experimental data thus obtaining the hydrogen binding energy. For local fields of about 3 V/angstrom the data are close to values obtained from thermal desorption spectroscopy. A comparison is made with calculations of the field-adsorption binding energy of atomic hydrogen on a jellium surface based on density functional theory,

引用

页码：891 / 894

页数：4

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