Acta Phys. -Chim. Sin. ›› 2009, Vol. 25 ›› Issue (08): 1641-1644.doi: 10.3866/PKU.WHXB20090812

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Photodissociation Dynamics of tert-Butyl Nitrite Investigated by Time-Resolved Fourier TransformInfrared Emission Spectroscopy

JI Min, ZHEN Jun-Feng, ZHANG Qun, CHEN Yang   

  1. Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, P. R. China
  • Received:2009-04-10 Revised:2009-05-08 Published:2009-07-16
  • Contact: ZHANG Qun, CHEN Yang E-mail:qunzh@ustc.edu.cn; yangchen@ustc.edu.cn

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Abstract:

The photodissociation dynamics of tert-butyl nitrite at 355 nm was investigated by means of time-resolved Fourier transform infrared (TR-FTIR) emission spectroscopy. By analyzing the observed TR-FTIR emission spectra of the NO fragments, we obtained the rotational temperature and the relative vibrational distribution of NO. In addition, an inversion was found to occur within this vibrational distribution. With the aid of previous studies, we determined that the relationship between the vibrational quantum number υ of NO corresponding to its maximum vibrational distribution and the vibrational quantum numbers υ* relating to the overtone transitions of N=O stretching vibration of the parent molecule is υ=υ*-1.

Key words: Photodissociation dynamics, Time-resolved Fourier transforminfrared emission spectroscopy, tert-butyl nitrite, Vibrational distribution