The physics of a chemically active plasma with nonequilibrium vibrational excitation of molecules

Spectral and Electrical Diagnostics of Gliding Arc

“…In the non-equilibrium zone, the electron temperature Te 10 kK is much higher than the vibrational one Tv 3 kK, which in turn is higher than rotational and translational ones: Tr T0 Π 1 to 1.5 kK. Such a hierarchy of temperatures, as well as relatively low electron concentration, with respect to the equilibrium plasma, are in good agreement with the theory of the non-equilibrium plasma [17,18]. On the other hand, such plasma parameters are very typical of powerful non-equilibrium discharges like a microwave plasma [18].…”

“…The reduced electric field E/n = EkT0 /p was then calculated from known pressure p and translational temperature T0 = Tr (obtained from spectroscopic experiments). The electron temperature was then determined from its known dependence on the E/n ratio in the air [17,18]. Corresponding results are given in Table. The electron concentration Ne was derived from discharge current density and electron mobility (which is estimated also as known function of the specific electric field E/n in air) [17,18].…”

“…The electron temperature was then determined from its known dependence on the E/n ratio in the air [17,18]. Corresponding results are given in Table. The electron concentration Ne was derived from discharge current density and electron mobility (which is estimated also as known function of the specific electric field E/n in air) [17,18]. Corresponding results are also presented in Table. One can see from Table that in the quasi-equilibrium zone of the gliding arc the electron temperature is not much different from other temperatures, and the electron concentration is relatively high.…”

Dissociation of molecules in plasma and gas: the energy

“…Since the molecule dissociation is accomplished through a vibrational excitation of molecule, the effective dissociation can take place under non-equilibrium conditions, in which the population of vibrationally excited states is higher than under equilibrium conditions. Therefore, the molecule dissociation was suggested to be performed in a non-equilibrium plasma with a high vibrational temperature 3, [25][26][27][28].…”

Multi-beam pulsed electron accelerator for radiation processing

“…At present the basic form of energy in the chemical industries (a heat, various chemical reactions and low-voltage electricity) starts to be replaced step by step with plasma-chemical initiation of many industrial processes [1][2][3][4]. Very good and simple illustration of large difference between traditional and plasma-chemical forms of a process as applied to the light sources can serve the difference in efficiency among the usual lamp, fluorescence lamp and laser where the light fluxes are large in many orders of magnitude as compared with the usual lamp.…”