TIME-RESOLVED HIGH-RESOLUTION FTIR ABSORPTION-SPECTROSCOPY IN A PULSED DISCHARGE

A simple method for measuring a time-resolved high-resolution FTIR abs orption spectrum has been demonstrated using a pulsed electric dischar ge synchronized to the motion of the moving mirror. This method can be applied to the phenomena which repeat rapidly ( > almost-equal-to 3 k Hz) by using a usual rapid scan FTIR spectrometer without any modifica tion to the software of the system. The fast vibrational energy relaxa tion of CO in moderately vibrationally excited states (v = 3-6) was cl early observed in a pulsed electric discharge through pure CO.