He, Ar and N2 broadening coefficients for the n4 band of CF4

A. Benidar1, J. Boissoles1, A. V. Domanskaya2*, M. V. Tonkov2

1 P.A.L.M.S., Université de Rennes 1, Campus de Beaulieu, bât.11 B, 35042 Rennes, France

2 Institute of Physics, St. Petersburg University, 198504 St. Petersburg, Russia

* Corresponding author. E-mail: domav@molsp.phys.spbu.ru

Received : 15 October 2003; revised version accepted : 02 November 2004

Abstract

Broadening coefficients for the n4 fundamental band of carbon tertafluoromethane, CF4, have been measured for the systems with argon, helium and nitrogen. Broadening coefficient behavior is similar to that previously reported for linear molecules: they coincide for P and R branches; the m-dependence in case of argon is sharper than that for helium. The broadening for nitrogen and helium are practically the same but the values for nitrogen are scattered around the general tendency. Q-branch broadening is also discussed. Our experimental data permitted us to evaluate the line intensity distribution and integrated intensity of the band.

  1. Vibration-rotation spectra; Collision broadening; Spherical top; Tetrafluoromethane; Line parameters.

 

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