Abstract The laser-induced fluorescence excitation spectrum of the A2Σ－X2Π3/2 transition of CuO in the 540－620nm region has been studied, where the CuO molecule was produced by using the technique of dc discharge reaction under a supersonic condition. We have recorded and rotationally analysed the 0－0, 1－0, 2－0 and 3－0 bands. The rotational constants of the upper state A2Σ- were determined and vibrational constants improved. In addition, the lifetime measurement for the A2Σ- state was carried out under the collision-free condition, and the lifetimes obtained are 469±2, 456±2, 488±3 and 490±4ns for v'=0, v'=1, v'=2 and v'=3 levels, respectively.
Received: 20 May 2001
Revised: 26 December 2001
Accepted manuscript online:
(Oscillator and band strengths, lifetimes, transition moments, and Franck-Condon factors)
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos 29873045 and 20073040), the Major Programme of the Chinese Academy of Sciences, and the State Key Development Programme for Basic Research of China (Grant No 1999075304).
Cite this article:
Jin Jin (金瑾), Ran Qin (冉琴), Zhang Xiao-Peng (张霄鹏), Chen Yang (陈旸), Chen Cong-Xiang (陈从香) Investigation of the A2Σ- state of CuO by laser-induced fluorescence 2002 Chinese Physics 11 481
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