A SEARCH FOR VIBRATIONAL CONTRIBUTIONS TO THE ACTIVATED ADSORPTION OF H-2 ON COPPER

被引：149

作者：

BERGER, HF

LEISCH, M

WINKLER, A

RENDULIC, KD

机构：

[1] Technische Universität Graz, Institut für Festkörperphysik, A-8010 Graz

来源：

CHEMICAL PHYSICS LETTERS | 1990年 / 175卷 / 05期

关键词：

D O I：

10.1016/0009-2614(90)85558-T

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 have performed seeded-beam experiments to separate the influence of kinetic energy and vibrational energy in the sticking of H-2 on copper. There is a contribution of vibration (about 20%) to the sticking coefficient. A widening of the angular variation of the sticking coefficient for the vibrationally hot beam indicates coupling of the translational and vibrational energy. Finally, the isolated effect of vibration shows a slight isotope effect favoring H-2 over D2; this points towards tunneling during adsorption.

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页码：425 / 428

页数：4

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