Anomalous branching ratio in the femtosecond surface chemistry of O-2/Pd(111)

被引：33

作者：

Misewich, JA

Nakabayashi, S

Weigand, P

Wolf, M

Heinz, TF

机构：

[1] COLUMBIA UNIV,DEPT PHYS,NEW YORK,NY 10027

[2] IBM CORP,DIV RES,TJ WATSON RES CTR,YORKTOWN HTS,NY 10598

[3] HOKKAIDO UNIV,DEPT CHEM,SAPPORO,HOKKAIDO 060,JAPAN

[4] MAX PLANCK GESELL,FRITZ HABER INST,D-1000 BERLIN,GERMANY

[5] COLUMBIA UNIV,DEPT ELECT ENGN,NEW YORK,NY 10027

来源：

SURFACE SCIENCE | 1996年 / 363卷 / 1-3期

关键词：

laser methods; low index single crystal surfaces; metallic surfaces; oxygen; palladium; photochemistry; photon stimulated desorption (PSD); surface photochemistry; thermal desorption spectroscopy;

D O I：

10.1016/0039-6028(96)00138-0

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：

In this paper we examine the surface chemistry of O-2/Pd(111) under conditions of dense electronic excitation generated by femtosecond laser pulses. In contrast to the cases of conventional photo-activation and thermal activation with femtosecond excitation the branching ratio for desorption/dissociation is found to favor desorption strongly. The results are discussed in terms of a recently developed model for desorption induced by multiple electronic transitions (DIMET).

引用

页码：204 / 213

页数：10

共 65 条

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