The rate constants of the two channels of the reaction of F atoms with HD in the temperature range 193–300 K

The rate constants for the two channels of the reaction of F atoms with HD, kF + HD and kF + DH, have been determined in the temperature range 193–300 K. The sum of rate constants kF + HD + kF + DH was determined by a competitive method and a discharge-flow-mass spectrometric technique, using the F + D2 reaction as a reference reaction. By combining the results for this sum of rate constants with published results for the rate constant k F + D 2 and for the ratio of rate constants kF + HD/kF + DH, values were derived for the individual rate constants kF + HD and kF + DH. The experimental results are compared with published results of quantum mechanical calculations and of quasiclassical calculations on the Stark–Werner potential energy surface.