Deactivation of higher vibration levels of HF by F atoms

摘要

The vibrational relaxation times of HF(v=3) and HF(v=1) in the presence of F atoms have been measured in a slowhyphen;flow fluorescence cell at room temperature. The HF is pumped to vibrational levelsv=1, 2, and 3 by a pulsed HF laser. It was found that F atoms deactivate HF(v=3) faster than they do HF(v=1) by a factor of 20.8plusmn;2.0. This dependence of the deactivation rate coefficient onvagrees with that determined for the exothermic Vndash;V or Vhyphen;R,T deactivation of HF(v=1 to 3) by N2, O2, D2, and HCl.