The radiative lifetime of metastable CO (a 3Π, v=0)

被引：87

作者：

Gilijamse, Joop J. ^{[1
]}

Hoekstra, Steven ^{[1
]}

Meek, Samuel A. ^{[1
]}

Metsaelae, Markus ^{[1
]}

van de Meerakker, Sebastiaan Y. T. ^{[1
]}

Meijer, Gerard ^{[1
]}

Groenenboom, Gerrit C. ^{[2
]}

机构：

[1] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany

[2] Radboud Univ Nijmegen, Inst Mol & Mat, NL-6525 ED Nijmegen, Netherlands

来源：

JOURNAL OF CHEMICAL PHYSICS | 2007年 / 127卷 / 22期

基金：

芬兰科学院;

关键词：

D O I：

10.1063/1.2813888

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：

We present a combined experimental and theoretical study on the radiative lifetime of CO in the a (3)Pi(1,2), v=0 state. CO molecules in a beam are prepared in selected rotational levels of this metastable state, Stark-decelerated, and electrostatically trapped. From the phosphorescence decay in the trap, the radiative lifetime is measured to be 2.63 +/- 0.03 ms for the a (3)Pi(1), v=0, J=1 level. From the spin-orbit coupling between the a (3)Pi and the A (1)Pi states a 20% longer radiative lifetime of 3.16 ms is calculated for this level. It is concluded that coupling to other (1)Pi states contributes to the observed phosphorescence rate of metastable CO. (c) 2007 American Institute of Physics.

引用

页数：4

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