Arrhenius parameters for the reaction of H atoms with GeH4

Abstract

Rate constants for H atom attack on GeH₄ have been measured in pulsed photolysis experiments in the temperature range 293–473 K. H atoms were generated by the Hg-sensitized photolysis of H₂ and were monitored by Lyman-α absorption. The values obtained are given by k₈/cm³ s^–1=(0.98 ± 0.13)× 10^–10 exp[(– 926 ± 49)/T]. An evaluation of the available data on the reaction has been undertaken, and the best value for the rate constant over the temperature range 200–500 K is recommended to be k₈/cm³ s^–1=(1.21 ± 0.10)× 10^–10 exp[(– 1008 ± 25)/T].