A discharge flow system has been used to study the stoichiometry and chemiluminescence of the reaction of atomic oxygen with phosphorus and with phosphine. Visible chemiluminescence in both reactions extending down to 3600 Å and ultraviolet emission in the O + PH3 reaction are attributed respectively to the processes O + PO → PO2 and OH + PO → HOPO. Bond energies of these species and the mechanisms of formation of excited PO are discussed. It is deduced that P and PO only play minor roles in the O + P4 reaction and in the chain reaction between phosphorus and oxygen.
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Davies et al. (1968) studied this question.
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