Kinetics of detonation initiation in the supersonic flow of the H-2+O-2 (air) mixture in O-2 molecule excitation by resonance laser radiation

The possibility of initiating detonation in the supersonic flow of the H-2 + O-2 (air) mixture behind L_ - the front of the inclined shock wave by O-2 molecule excitation to the O-2(a(1)Delta(g)) and O-2(b(1)Sigma(g)(+)) states by laser radiation with a wavelenth lambda(l) = 1.268 mum and 762 nm is considered. Resonance laser radiation intensifies C chain combustion due to the formation of new pathways for generating active atoms O-. and H-. and radicals (O)over dotH and has a substantially nonthermal character. Even at low (similar to3 kJ/cm(2)) energies of radiation with lambda(1)=762 nm applied to the gas, detonation combustion can occur even at a distance of 1 m from the front at the gas temperature as high as 600 K.