The Lorentz parameter Δν has been obtained by the equivalent-width method for the pressure-broadened spectral lines of low-J value in the HF fundamental. These values have been compared with values obtained directly from the line shapes after correction for the effect of instrumental broadening. From the line intensities I01(m), the square of the matrix element of the electric dipole moment for a nonrotating anharmonic oscillator |R01|2, and a set of rotational-correction factors F01(m) have been calculated. The effective charge M1 and the vibration-rotation interaction constant θ have been calculated. Experimental and theoretical values of the F01(m) have been compared.
R. J. LOVELL and W. F. HERGET, "Lorentz Parameters and Vibration-Rotation Interaction Constants for the Fundamental Band of HF," J. Opt. Soc. Am. 52, 1374-1375 (1962)