HIGHLY ANISOTROPIC ANGULAR-DEPENDENCE OF CH3 FRAGMENTATION FROM ELECTRON-TRANSFER REACTIONS ON CH3BR/GAAS(110)

被引：32

作者：

YANG, QY

SCHWARZ, WN

LASKY, PJ

HOOD, SC

LOO, NL

OSGOOD, RM

机构：

[1] Columbia Radiation Laboratories, Columbia University, New York

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 72卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.72.3068

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Angular-resolved time-of-flight measurements have been made of the photofragmentation of CH3Br adsorbed on GaAs(110). The results show two distinct angular lobes in the plane defined by the surface normal and the [01] direction, each with a characteristic threshold and fragment kinetic energy. The results are interpreted as originating from dissociative electron attachment of adsorbed CH3Br electrons which are supplied by either hot electrons (those excited above the conduction band minimum) in one direction or thermal electrons (those at the CBM) in the other.

引用

页码：3068 / 3071

页数：4