中国物理B ›› 2002, Vol. 11 ›› Issue (5): 481-485.doi: 10.1088/1009-1963/11/5/313

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

金瑾, 冉琴, 张霄鹏, 陈旸, 陈从香   

  1. Open Laboratory of Bond-Selective Chemistry, and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
  • 收稿日期:2001-05-20 修回日期:2001-12-26 出版日期:2002-05-13 发布日期:2005-06-13
  • 基金资助:
    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).

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)   

  1. Open Laboratory of Bond-Selective Chemistry, and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
  • Received:2001-05-20 Revised:2001-12-26 Online:2002-05-13 Published:2005-06-13
  • Supported by:
    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).

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摘要： 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.

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.

Key words: CuO, excitation spectrum

中图分类号:  (Fluorescence and phosphorescence spectra)

  • 33.50.Dq
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)