FOURIER TRANSFORM DETECTION OF THE $\nu_{3}$ FUNDAMENTAL OF THE $N_{3}$ RADICAL
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Date
1988
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Publisher
Ohio State University
Abstract
We have observed the $\nu_{3}$ asymeetric stretching fundamental of the azide radical. $N_{3}$ was produced in a long pathlength absorption cell by the reaction of $HN_{3}$ with Cl atoms. The use of multipass mirrors gave an effective pathlength of about 100 m and absorption of upto 10\% was seen for the strongest lines. The spectrum was recorded in 8 hours of averaging using a BOMEM Fourier transform spectrometer at a resolution of $0.004 cm^{-1}$. The vibrational frequency was found to be unusually low at $1645 cm^{-1}$, and lambda doubling was observed in both the $^{2}\pi_{3/2}$ and $^{2}\pi_{1/2}$ spin components. The observed transitions and molecular constants will be presented.
Description
Author Institution: NOAA Aeronomy Laboratory, R/E/AL2, 325 Broadway, Boulder CO 80303, and Department of Chemistry and Biochemistry and CIRES, University of Colorado; Department of Chemistry, University Of Arizona