PHOTON-STIMULATED DESORPTION OF EXCITED ALKALI ATOMS FROM ALKALI-HALIDES FOLLOWING CORE-LEVEL EXCITATION

被引：20

作者：

BUNTON, PH ^{[1
]}

HAGLUND, RF ^{[1
]}

LIU, D ^{[1
]}

TOLK, NH ^{[1
]}

机构：

[1] AUSTIN PEAY STATE UNIV,DEPT PHYS,CLARKSVILLE,TN 37044

来源：

SURFACE SCIENCE | 1991年 / 243卷 / 1-3期

基金：

美国国家航空航天局; 美国国家科学基金会;

关键词：

D O I：

10.1016/0039-6028(91)90361-U

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：

We report excitation-functions for excited alkali atoms from NaCl, KCl and LiF surfaces irradiated with ultraviolet light in the range 15 to 70 eV, an energy range including several alkali core levels. The excitation function of the excited Li yield is shown to be similar to the total electron yield obtained simultaneously. The results are consistent with desorption initiated by a localized two-hole valence excitation following the decay of the core excitation. The excited potassium yield from KCl is seen to decrease with temperature, suggesting a dependence on surface conditions such as the presence of excess metal.

引用

页码：227 / 238

页数：12

共 47 条

[1] MODEL FOR ELECTRON-STIMULATED AND PHOTON-STIMULATED DESORPTION [J].