物理化学学报 >> 1997, Vol. 13 >> Issue (10): 885-889.doi: 10.3866/PKU.WHXB19971005

研究论文 上一篇    下一篇

F原子与I2的化学发光反应

吴成印,储焰南,曹德兆   

  1. 中国科学院安徽光学机械研究所，激光光谱学开放实验室，合肥 230031
  • 收稿日期:1997-01-30 修回日期:1997-04-14 发布日期:1997-10-15
  • 通讯作者: 吴成印

Chemiluminescent Reactions of Fluorine Atoms with lodine Molecules

Wu Cheng-Yin,Chu Yan-Nan,Cao De-Zhao   

  1. Laser Spectroscopy Laboratory,Anhui Institute of Pptics and Fine Mechanics,Academia Sinica,Hefei 230031
  • Received:1997-01-30 Revised:1997-04-14 Published:1997-10-15
  • Contact: Wu Cheng-Yin

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摘要：

在流动余辉实验装置上，首次在F／I2体系中观察到比较强的IF（B-X）的发射光谱，计算了IF（B）的振动布居，发现在低振动能级（ν′＜5）布居满足玻尔兹曼分布，而在高振动能级布居则明显增多，和以前在F原子与碘合物反应时观察到的IF（B）的振动布居非常相似，结合实验中观察到IF（B-X）跃迁强度与F原子的浓度的二次方成正比，认为该体系中IF（B）是由激发态的I（2P1/2。）与基态的F（2P3/2）通过三体碰撞复合产生.

关键词: 流动余辉, 化学发光, 能量转移, 化学激光

Abstract:

In the flowing afterglow system, strong emission spectrum of IF(B-X) has been observed from the reaction of F atoms with Iodine molecules. The IF(B) vibrational distribution was measured, it has a striking similarity to that of F atoms with other iodide flames, being Boltzmann for the lower vibrational levels (v' <5), but having an excess population for the higher levels. In addition, the IF(B) intensity shows a quadratic dependence on fluorine atom concentration. These results lead us to suggest that the simple three-body recombination of a ground state fluorine atom with an excited state iodine atom is the origin of the IF(B) in this reaction.

Key words: Flowing afterglow, Chemiluminescence, Energy transfer, Chemical laser