MA7 - Measurement of the temperature dependence of the vibrational relaxation rate of HF and the effect of SF6, N2and F2as diluents

The vibrational relaxation of HF was measured by the laser-excited fluorescence technique over the temperature range of 295-730 K. The results are in agreement with the 350 K measurement of Airey and Fried and are consistent with the high-temperature shock-tube results of Bott and Cohen and those of Solomon et al. These results are compared with a theoretical calculation of Shin. The effect of N2, SF6, and F2on the rate of vibrational relaxation of HF was measured and found to be much slower than the relaxation rate of HF by HF molecules.