物理化学学报 >> 2003, Vol. 19 >> Issue (03): 260-264.doi: 10.3866/PKU.WHXB20030316

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O(3P)原子与CS2反应可见化学发光研究

张先燚;孔祥蕾;罗晓琳;李益民;李海洋   

  1. 中国科学院安徽光学精密机械研究所，环境光谱学实验室,合肥　230031; 安徽师范大学物理与电子信息学院,芜湖　241000
  • 收稿日期:2002-06-03 修回日期:2002-08-20 发布日期:2003-03-15
  • 通讯作者: 李海洋 E-mail:hli@aiofm.ac.cn

Study on Visible Chemiluminescence from Reaction of O(3P) Atom with Carbon Disulfide

Zhang Xian-Yi;Kong Xiang-Lei;Luo Xiao-Lin;Li Yi-Min;Li Hai-Yang   

  1. Laboratory of Environmental Spectroscopy, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei　230031; College of Physics and Electronic Information, Anhui Normal University, Wuhu　241000
  • Received:2002-06-03 Revised:2002-08-20 Published:2003-03-15
  • Contact: Li Hai-Yang E-mail:hli@aiofm.ac.cn

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摘要： 在交叉分子束装置上研究了基态氧原子O(3P)与二硫化碳反应的可见光区(380～500 nm)化学发光，得到的光谱标识为SO2分子 3B1→ 1A1自旋禁阻跃迁发射谱，实验中得到的上态主要是振动基态和弯曲模ν2激发的振动激发态，通过对不同压力情况下光谱的分析和反应通道的讨论，确认 3B1态的SO2来自于反应的多级过程.

关键词: 交叉分子束, 化学发光, 气相反应

Abstract: Visible Chemiluminescence in the region of 380～500 nm was measured from the reaction of O( 3P ) atoms with carbon disulfide under various pressures using crossed molecular beam apparatus. The emission spectra were assigned to 3B1→ 1A1 transition of gaseous sulfur dioxide molecules. 3B1 state of sulfur dioxide is mainly composed of vibrational ground state and excited vibrational state of bending vibrational mode, vibrational band progressions in the lower state of bending modes and stretching modes were observed. The spectra under various pressures and the reaction mechanism were discussed. It was proposed that 3B1 state of sulfur dioxide was produced from multistage processes.

Key words: Crossed molecular beam, Chemiluminescence, Gas-phase reaction