V. V. AZATYAN, N. M. RUBTSOV, G. I. TSVETKOV AND V. I. CHERNYSH, Institute for Structural Macrokinetics and Material Science of Russian Academy of Sciences, 142432, Russian Federation, Noginski region, Chernogolovka.
It is shown by means of optical spectra that the interaction of H atoms with solid salts (NaCl, NaF, Na2CO3, Na2B4O7, Na2SO4, NaNO3, KCl, KBr, CsJ, CaCl2, CaF2) leads to the exclusion of free radicals (CaCl A1P1/2 , B2S+ and CaF A2P) and metal atoms in excited and ground states into gas phase. Concentrations of ground state Na atoms over NaCl surface amount to 109 -1011 cm-3 in H atoms flow and in 2H2+O2 flame at 1 and 6 Torr at 770K correspondingly. Concentrations of Na 2P3/2 amount to ~ 5.106 cm-3. Metallization of NaCl surface on treatment with rarified flame of H2 combustion is detected as well. Both participation of metal atoms in combustion and the change in the composition and properties of the surface markedly influence on the features of chain combustion by the example of H2 + O2 reaction.