VELOCITY DISTRIBUTIONS OF PHOTOCHEMICALLY DESORBED MOLECULES

被引：68

作者：

ZIMMERMANN, FM ^{[1
]}

HO, W ^{[1
]}

机构：

[1] CORNELL UNIV,CTR MAT SCI,ITHACA,NY 14853

来源：

JOURNAL OF CHEMICAL PHYSICS | 1994年 / 100卷 / 10期

关键词：

D O I：

10.1063/1.466864

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 standard picture of desorption induced by electronic transitions (DIET) is analyzed for high excited state quenching rates. Simple dynamical considerations are found to explain the velocity distributions characterizing a large number of photodesorption and electron stimulated desorption systems. Without invoking any thermalization processes, the model predicts a Maxwell-Boltzmann velocity distribution, thus providing a theoretical justification for this distribution's widespread use as an empirical fitting formula for velocity distributions of nonthermally desorbed species.

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页码：7700 / 7706

页数：7

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