Anion formation moderated by post-collision interaction following core-level photoexcitation of CO

被引：26

作者：

Hansen, DL ^{[1
]}

Stolte, WC

Hemmers, O

Guillemin, R

Lindle, DW

机构：

[1] Jet Prop Lab, Div Earth & Space Sci, Pasadena, CA 91109 USA

[2] Univ Nevada, Dept Chem, Las Vegas, NV 89154 USA

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2002年 / 35卷 / 17期

关键词：

D O I：

10.1088/0953-4075/35/17/101

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The photon-energy dependence of the oxygen-anion (O-) yield has been measured following photoexcitation of CO just above both the C and 0 K-shell ionization thresholds. The observed exponentially decaying yields above both edges are attributed to a post-collision interaction (PCI) between the emitted photoelectron and the CO molecule. Using a modified semi-classical atomic model, the near-threshold spectra can be reproduced if an energy shift is included. The shift in photon energy above the C K edge is greater than above the 0 K edge. The difference is attributed to a site-dependent PCI effect related to the polarity of the valence orbitals of the CO molecule.

引用

页码：L381 / L386

页数：6

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