The A 1Σu+ state of K2 up to the dissociation limit

被引：25
|
作者：
Falke, St. [1 ]
Sherstov, I. [1 ]
Tiemann, E. [1 ]
Lisdat, Ch. [1 ]
机构：
[1] Leibniz Univ Hannover, Inst Quantenopt, D-30167 Hannover, Germany
来源：
JOURNAL OF CHEMICAL PHYSICS | 2006年 / 125卷 / 22期
关键词：
D O I：
10.1063/1.2375120
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 report an experimental study of the K-2 A (1)Sigma(+)(u) state. Long-range levels up to the dissociation limit were observed in a two laser spectroscopic experiment using a highly collimated molecular beam. We derive an analytical potential energy curve for the complete A state including long-range dispersion terms. From these, we obtain radiative atomic lifetimes of 26.74(3) ns for the 4p(1/2) state and 26.39(3) ns for the 4p(3/2) state of K-39. The dissociation energy of the X (1)Sigma(+)(g) ground state with respect to v=0, J=0 is found to be D-0=4404.808(4) cm(-1). (c) 2006 American Institute of Physics.
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页数：9
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