Vibrational relaxation of O2(X3 Sigma g-, v = 9-13) by collisions with O2

Vibrationally excited O(2)(X(3) Sigmag(-)) was generated in the UV laser flash photolysis of O(3) and single vibrational level was detected via laser-induced fluorescence (LIF) in the B(3) Sigmau(-)-X(3) Sigmag(-) system. The time-resolved LIF of adjacent vibrational levels has been analyzed by the...

Full description

Saved in:
Bibliographic Details
Published inPhysical chemistry chemical physics : PCCP Vol. 9; no. 31; p. 4407
Main Authors Watanabe, Shinji, Usuda, Shin-Ya, Fujii, Hidekazu, Hatano, Hiroyuki, Tokue, Ikuo, Yamasaki, Katsuyoshi
Format Journal Article
LanguageEnglish
Published England 21.08.2007
Subjects
Chemistry, Physical - methods
Fluorescence
Kinetics
Lasers
Models, Chemical
Models, Statistical
Models, Theoretical
Nitrogen - chemistry
Oxygen - chemistry
Pressure
Quantum Theory
Thermodynamics
Time Factors
Ultraviolet Rays
Vibration
Online AccessGet more information

Cover

More Information
Summary:Vibrationally excited O(2)(X(3) Sigmag(-)) was generated in the UV laser flash photolysis of O(3) and single vibrational level was detected via laser-induced fluorescence (LIF) in the B(3) Sigmau(-)-X(3) Sigmag(-) system. The time-resolved LIF of adjacent vibrational levels has been analyzed by the integrated-profiles method and the rate coefficients for single-quantum relaxation, O(2)(X(3)Sigmag(-), v = 9-13)+ O(2)(v = 0)--> O(2)(X(3)Sigmag(-), v - 1)+ O(2)(v = 1), have been determined. To the best of our knowledge, the rate coefficients for v = 12 and 13 are measured for the first time in the present study. The efficiency of relaxation is higher at lower vibrational levels, indicating that a small energy mismatch is suitable for the energy transfer. The vibrational level dependence of all the rate coefficients for the relaxation measured in the present study and previously reported by several groups can be rationalized by the energy gap law.
ISSN:1463-9076
1463-9084
DOI:10.1039/b702840g