Observation of neutral atomic fragments for specific 1s core excitations of an adsorbed molecule

被引：20

作者：

Frigo, SP ^{[1
]}

Feulner, P ^{[1
]}

Kassuhlke, B ^{[1
]}

Keller, C ^{[1
]}

Menzel, D ^{[1
]}

机构：

[1] Tech Univ Munich, Phys Dept E20, D-85748 Garching, Germany

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.80.2813

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have succeeded in detecting a neutral atomic fragment produced by energy-and polarization-specific molecular core electron excitations, enabling a comparison of oxygen atom and oxygen ion yields from photon induced dissociation of chemisorbed CO molecules on the Ru(001) surface. Resonances in the O-0 atom yield are observed at 534 and 550 eV, but no enhancement is observed for higher-energy excitations which stepwise increase the O+ yield. The mechanistic reasons for the similarities and differences in neutral and ionic fragment production are discussed, with emphasis on the influences of charge transfer and redistribution processes.

引用

页码：2813 / 2816

页数：4

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