Observed Density Profiles Research Articles

Thermal Dissociation Rate of Hydrogen

The thermal dissociation rate of hydrogen in xenon-hydrogen mixtures has been studied with shock-wave techniques over the temperature range 3000–4500°K. The observed density profiles were consistent with the rate constant expressions: H2+Xe=Xe+2Hk=1.8×1017T−12exp(−D/RT)cm3mole−1sec−1H2+H2=H2+2Hk=1.8×1020T−32exp(−D/RT)cm3mole−1sec−1H2+H=3Hk=1.2×1018T−12exp(−D/RT)cm3mole−1sec−1.