Steady flow of a vibrationally excited gas of diatomic molecules

Silakov, V. P.; Chebotarev, A. V.

doi:10.1007/bf00916131

Cited by 2 publications

(2 citation statements)

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“…Here various channels of the reactions (3)-( 5), (8) are grouped in accordance with final, relatively stable products of interactions that are obtained as a result of quenching of the intermediate, quickly decaying states:…”

Section: Processes Of Excitation Destruction and Ionization Of Heavy ...mentioning

confidence: 99%

“…According to [8], in order to describe the effect of deep penetration of ionizing radiation into dense layers of single-component gases, there is no necessity to invoke a consideration of admixtures with ionization potentials less than that of the main gas. It had been shown [8] that in pure nitrogen this effect may be successfully interpreted as a result of proceeding of the stepwise photoionization processes with a participation of metastable states of the molecules, N 2 (A) and N 2 (a ). The smallness of the absorption coefficient of the ionizing radiation is determined in this case by the smallness of the absorption coefficient of the quanta exciting the metastable levels.…”

Section: Introductionmentioning

confidence: 99%

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Theoretical study of the role of ultraviolet radiation of the non-equilibrium plasma in the dynamics of the microwave discharge in molecular nitrogen

Matveyev¹,

Silakov

1999

Plasma Sources Sci. Technol.

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A self-consistent plasmachemical model describing the dynamics of the non-equilibrium microwave discharge in molecular nitrogen with consideration for kinetic, photochemical and electrodynamic phenomena is proposed. The photochemical block of the model accounts for the processes of photoexcitation and photoionization of nitrogen molecules in the ground and excited electronic states. Radiative emittance of the discharge plasma is conditioned by the processes of photorecombination of electrons and positive ions as well as by the processes of spontaneous radiation of electronically excited molecules. Solution of radiation transfer equations and calculation of photochemical constants were made with allowance for the vibrational-rotational structure of the corresponding radiative transitions. The calculations performed have shown that the velocities of the ionization front propagation in the microwave discharge that were observed experimentally may be explained without invoking considerations concerning the existence of easily ionizable admixtures in nitrogen. The phenomenon of electron generation in the photohalo region of the discharge is mainly conditioned by the processes of stepwise photoionization of nitrogen molecules. The mechanisms leading to the development of kinetic instabilities in the discharge region are analysed, and a satisfactory agreement between calculation and experimental results is noted.

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Section: Processes Of Excitation Destruction and Ionization Of Heavy ...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%