The role of molecular state and orientation in harpooning reactions:: N2O on Cs/Pt(111)

被引：30

作者：

Brandt, M

Greber, T

Bowering, N

Heinzmann, U

机构：

[1] Univ Bielefeld, Fak Phys, D-33501 Bielefeld, Germany

[2] Univ Zurich, Inst Phys, CH-8057 Zurich, Switzerland

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.81.2376

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The interaction of a beam of state selected and oriented N2O molecules with 1 ML of Cs on Pt(lll) is studied by means of exoelectron emission. While the immediate emission is absent for the impact of ground-state molecules it is present when the molecules are in the first excited n(2) = 1 vibrational bending mode. The observed orientational anisotropy agrees with a theory that includes the molecular orientation. The results can be explained in a picture where N2O approaches the surface with the O end and where-after harpooning-an exoelectron is emitted.

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页码：2376 / 2379

页数：4

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