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Для решения задач совершенствования плазмохимических генераторов озона на барьерном разряде и глубокого исследования пространственно-временной структуры барьерного разряда был проведён ряд экспериментов с барьерным разрядом в воздухе при атмосферном давлении. В работе экспериментально показано, что наиболее производительной по синтезу озона является расширенная часть канала микроразряда, непосредственно прилегающая к диэлектрическому барьеру. Также показано, что безбарьерные генераторы озона уступают по эффективности барьерным. Полученные результаты необходимо учитывать при разработке высокопроизводительных плазмохимических генераторов озона. Ключевые слова: барьерный разряд, канал микроразряда, плазмохимический синтез озона, плазмохимический генератор озона на барьерном разряде. INVESTIGATION OF THE EFFECTIVENESS OF PLASMA-CHEMICAL OZONE GENERATORS ON THE BARRIER DISCHARGE IN AIR AT ATMOSPHERIC PRESSURE. V.V. ANDREEV, A.N. MATUNIN, Yu.P. PICHUGIN, V.G. TELEGIN, G.G TELEGIN. The technologies of plasma synthesis of ozone, based on the use of a barrier discharge, are investigated. To solve the problems of development of plasma-chemical ozone generators on the barrier discharge and in-depth study of the spatiotemporal structure of the barrier discharge, a series of experiments with a barrier discharge in air at atmospheric pressure were performed. As shown experimentally that the most productive on the synthesis of ozone is the extended part of the microdischarge channel directly adjacent to a dielectric barrier. Also it was demonstrated that barrier-free ozone generators are less efficient compared to the barrier. The results obtained should be considered when designing of high performance plasma ozone generators. Key words: barrier discharge, the microdischarge channel, plasma-chemical synthesis of ozone, plasma-chemical ozone generator on the barrier discharge.

Stochastic phenomena in the kinetics of chemical reactions induced by a thermal explosion are studied. The statistical analysis is performed on the basis of nonlinear differential equations for gas temperature and concentration of reacting particles with random initial conditions, and also corresponding equations for the probability density function of the state variables of the system. The results of the numerical solution of these equations are presented in the graphical form as a statistical set of an ensemble of kinetic curves of concentration of reacting particles and gas temperature and as the time evolution of their probability density function. Small random fluctuations of gas temperature and particle concentration at the beginning of the reaction are demonstrated to induce significant fluctuations of the induction period.Key words: thermal explosion, chemical reactions, gas temperature, concentrations of reagents, fluctuations, induction period, statistical analysis, numerical methods, nonlinear differential equations, kinetic curves, evolution of the probability density function. 1.Studying the processes that accompany the thermal explosion is extremely important for both basic research and applications. These investigations were intensely pursued and were described in monographs and reviews (e.g., [1][2][3][4][5]). The formulation of the problem about the thermal explosion in the classical theory implies determining the basic characteristics of the phenomenon with specified initial and boundary conditions. These basic characteristics are the critical conditions and the induction period (time of self-sustained acceleration of the reaction before the combustible mixture becomes ignited).One of the issues of particular interest in analyzing the process of thermal self-ignition is the adiabatic explosion, where the heat released in chemical reactions is spent on heating the combustible mixture. This problem was solved in [4], as applied to combustion of hydrocarbons, on the basis of differential equations for gas temperature and concentrations of reagents. The state variables describing the system were assumed to take their mean values, and fluctuations were neglected. It was noted [6], however, that calculations on the basis of deterministic equations cannot ensure high accuracy in terms of the correct description of all features of the thermal explosion, because of internal thermodynamic fluctuations, which are always inherent in any physicochemical system and are responsible for the complicated random behavior of this system [6]. One possible reason for these fluctuations is the fact that ignition always occurs at a certain point, which can be randomly localized inside the vessel, and then the process propagates over the entire volume [3].As subsequent research showed [6], the allowance for concentration fluctuations results not only in quantitative but also in qualitative changes in the system behavior, in particular, they can initiate random transitions from one state to another, etc.From the mathemat...

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