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Chinese Physics, 2002, Vol. 11(5): 481-485    DOI: 10.1088/1009-1963/11/5/313
ATOMIC AND MOLECULAR PHYSICS Prev   Next  

Investigation of the A2Σ- state of CuO by laser-induced fluorescence

Jin Jin (金瑾), Ran Qin (冉琴), Zhang Xiao-Peng (张霄鹏), Chen Yang (陈旸), Chen Cong-Xiang (陈从香)
Open Laboratory of Bond-Selective Chemistry, and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
Abstract  The laser-induced fluorescence excitation spectrum of the A2ΣX2Π3/2 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.
Keywords:  CuO      excitation spectrum  
Received:  20 May 2001      Revised:  26 December 2001      Accepted manuscript online: 
PACS:  33.50.Dq (Fluorescence and phosphorescence spectra)  
  33.80.Rv (Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states))  
  33.15.Mt (Rotation, vibration, and vibration-rotation constants)  
  33.20.Sn (Rotational analysis)  
  33.20.Tp (Vibrational analysis)  
  33.70.Ca (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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