Abstract
The concentration limits for flame propagation in GeH4−O2 (air) mixtures are determined over a wide range of initial pressures (0.7–100 kPa) at room temperature. Flame propagation is found to be of a chain-thermal character and excited intermediate particles are involved in the reactions which limit the branching rate. The gas-phase reaction products (H2O2, H2O, and H2) are determined and its is shown that the relative yields of these components and the stoichiometry, as a whole, vary with the composition of the initial gas mixture. Chemically induced decomposition of GeH4 by a branching-chain oxidation process for oxidation of the hydride by oxygen is observed.
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