Valence fluctuation state of a metastable He atom beam on a metal surface, and singlet-triplet conversion

被引：0

作者：

Kawai, H ^{[1
]}

Yoshimori, A ^{[1
]}

Nakayama, M ^{[1
]}

机构：

[1] OKAYAMA UNIV SCI,DEPT ELECT ENGN,OKAYAMA 700,JAPAN

来源：

SURFACE SCIENCE | 1996年 / 363卷 / 1-3期

关键词：

atom-solid interactions; scattering; atom-solid reactions; ion-solid interactions; magnetic phenomena; many body and quasi-particle theories; metallic surfaces; surface electronic phenomena; work function measurements;

D O I：

10.1016/0039-6028(96)00120-3

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：

The time-dependent expectation value of the triplet metastable He atom is obtained by starting from the singlet state and solving the time-dependent Schrodinger equation directly, to the eighth-order of V, where V is the transfer integral between the conduction electron state and the 2s state of the He atom. The results show that rapid singlet-triplet conversion on the low work-function metal surface occurs through the valence fluctuation state. The quasi-static approximation is demonstrated to be valid to the eighth-order of V. The previously conjectured closed form of the transition rate for the conversion is confirmed.

引用

页码：127 / 132

页数：6