Rate constants for the reaction, deuterium atom + hydrogen .fwdarw. hydrogen deuteride + hydrogen atom, over the temperature range 655-1979 K, by the flash photolysis-shock tube technique

摘要: Thermal rate constants measured by the flash photolysis-shock tube (FP-ST) technique are reported for reaction D + H{sub 2} {yields} HD H, over temperature range 655-1979 K. D-atom concentration has been monitored atomic resonance absorption spectroscopy (aras). The results can be represented Arrhenius expression k{sub 1} = (3.76 {plus minus} 0.31) {times} 10{sup {minus}10} exp({minus}4,985 80 K/T) cm{sup 3} molecule{sup {minus}1} s{sup {minus}1}, to within 28% range. experimental then compared theoretical calculations that utilize ab initio potential energy surfaces presumably most exact have ever determined.