Abstract

To develop an adequate mathematical description of explosion in air observed under the specific conditions of electric discharge initiation, we considered a chemical kinetic model of interaction between two chain reactions: NO oxidation, which provides high concentration of О atoms required for obtaining nitrogen oxide in the processes O + N2(A3Σu+) → O(1S) and O(1S)–N2 + O → NO + NO(B2Π) and nitrogen oxidation, which leads to electronically excited NO2* molecules required for the formation of О atoms in the oxidation of NO. This positive feedback leads to an avalanche-like increase in the concentration of О atoms and the rate of both chain reactions, i.e., causes an explosion in air initiated by electric discharge.

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