CHARGE-EXCHANGE OF SWIFT MOLECULES H-2(+), H-2, CO2+ AND CO2, AT PD(111) SURFACES

被引：6

作者：

SCHLATHOLTER, T ^{[1
]}

HEILAND, W ^{[1
]}

机构：

[1] UNIV OSNABRUCK,FACHBEREICH PHYS,D-49069 OSNABRUCK,GERMANY

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 1995年 / 100卷 / 2-3期

关键词：

D O I：

10.1016/0168-583X(94)00847-7

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Molecular ions and neutral molecules are scattered at 500 eV and at grazing incidence from metal surfaces. H-2(+) and CO2+ are subject to charge exchange processes which lead in part to dissociation. In the case of CO2 evidence for negative molecular ion formation is found. Potassium ''poisons'' the dissociation of H-2 on Pd. These findings are supported by comparison of different metals, Pd(111) and Pd(111) covered with a monolayer of K. The dissociation probability of H-2(+) and H-2(0) decreases at the K-covered surface, in the case of CO2+ and CO20 an increase is found. CO2+ on Pd(111) + K dissociates completely.

引用

页码：352 / 355

页数：4