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 N
2
, SF
6
, and F
2
on the rate of vibrational relaxation of HF was measured and found to be much slower than the relaxation rate of HF by HF molecules.