物理化学学报 >> 1988, Vol. 4 >> Issue (04): 406-410.doi: 10.3866/PKU.WHXB19880416

研究论文 上一篇    下一篇

光学双共振研究苯的单振动能级弛豫

赵红; 李黎; 陈锡荣   

  1. 中国科学院大连化学物理研究所
  • 收稿日期:1987-07-16 修回日期:1987-12-12 发布日期:1988-08-15
  • 通讯作者: 李黎

IR-UV DOUBLE RESONANCE STUDIES OF THE SINGLE VIBRATIONAL LEVEL RELAXATION OF BENZENE

Zhao Hong; Li Li; Chen Xirong   

  1. Dalian Institute of Chemical Physics; Academia Sinica
  • Received:1987-07-16 Revised:1987-12-12 Published:1988-08-15
  • Contact: Li Li

摘要: 用红外-紫外激光双共振技术首次测定了苯的ν_(10), ν_(11), 3ν_(16), ν_4等8个单振动能级的弛豫速率。弛豫过程量现双指数衰减特性, 它们相当于V-V和V-T弛豫过程, 例如16_110_1能级的T-V和V-T弛豫速率常数分别为0.59×10~5和0.023×10~6 s~(-1)Torr~(-1)。

Abstract: The relaxation rates of the V_(l0),v_(11),3v_(l6) and v_4 eight single vibrational levels of benzene have been studied by using IR-UV double resonance technique for the first time. The relaxation processes for these eight vibrational levels all exhibit a feature of two exponential decay, which correspond to the V-V and V-T energy ralaxation process respectively. As an example the values of κ_(V-V) and κ_(V-T) for 16_1 10_1 level are 0.59±0.05 μs~(-1)Torr~(-1) and 0.023±0.003 μs~(-1) Torr~(-1) respectively.