Abstract

The novel experimental approach is applied to investigate the cross sections for rotational relaxation σ rot.-rel. in the SF 6 -Ar mixtures irradiated by pulsed CO 2 laser line. The applied method is the pulsed photoacoustic technique, and it is based on proposal for σ rot.-rel. determination by transmission spectroscopy technique. The collisional effects have been investigated for the 0.1-0.8 J/cm 2 laser fluence range. Also, the collisional effects on rotational and translational temperature (T R ) for SF 6 -Ar mixtures have been calculated

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