Preliminary results on photoacoustic study of the relaxation of vibrationally excited ozone (ν3).

Details Preliminary results on photoacoustic study of the relaxation of vibrationally excited ozone (ν3). Preliminary results on photoacoustic study of the relaxation of vibrationally excited ozone (ν3).

May 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998jqsrt..59..369z&link_type=abstract

Journal of Quantitative Spectroscopy and Radiative Transfer, vol. 59, issue 3-5, pp. 369-375

Physics

1

Ozone: Molecular Processes

Scientific paper

The vibrational translational relaxation time of ν3 state of ozone was measured from the phase shift of the photoacoustic signal relative to the amplitude-modulated radiation of the CO2 laser used for excitation of O3. A special photoacoustic cell with a third electrode is used to eliminate an instrumentation phase shift caused by inertia of the microphone membrane. A three-level kinetic model of O3 is used to fit the experimental and calculated data of the phase shift and to determine the vibrational relaxation rate coefficients for pure ozone.

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