Bulg. J. Phys. vol.27 no.S1 (2000), pp. 142-145


Rotational Energy Transfer in Gas Mixtures

M. Terzić1, J. Jovanović-Kurepa2, D.D. Markushev2
1Faculty of Science & Mathematics, 21000 Novi Sad, Yugoslavia
2Institute of Physics, P.O. Box 57, 11001, Belgrade, Yugoslavia
Abstract. A calibrated photoacoustic detection technique has been used to investigate the rotational energy transfer for SF6 molecules in SF6-Ar gas mixtures, irradiated by pulsed 10P(16) CO2 laser line in the fluence range of 0–0.5 J/cm2. Particular attention was paid to evaluate the bulk rotational relaxation data in Ar pressure range (0–140 mbar), broader than cited in the literature. Results for bulk R → R/T parameters show different behavior for the low and high buffer pressure region.

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