RUS  ENG
Full version
JOURNALS // Teplofizika vysokikh temperatur // Archive

TVT, 2019 Volume 57, Issue 5, Pages 621–627 (Mi tvt11199)

This article is cited in 1 paper

Papers published in the English version of the journal
Plasma Investigations

Hybrid microwave-DC discharge in nitrogen at reduced pressures

Yu. A. Lebedeva, G. V. Krashevskayaab, A. Yu. Titova, I. L. Epshteina

a A. V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Moscow
b National Engineering Physics Institute "MEPhI", Moscow

Abstract: The hybrid nonuniform microwave-DC discharge in nitrogen at pressure $1$$15$ Torr is studied by the method optical emission spectroscopy with spatial resolution. Discharge is ignited between the microwave powered antenna and grounded disk electrode placed at the distance of $2.5$ cm from antenna. Antenna was positively biased relative to the grounded electrode. The ratio of the intensities of the nitrogen band at $337$ nm and the emission of the ion band at $391$ nm is used to determine the microwave field strength. Second positive system of nitrogen emission prevails over others in near antenna region. Emission of the first negative nitrogen ion system has the highest intensity near flat electrode. The vibrational distributions of nitrogen molecules and their dependence on direct current and position between antenna and grounded electrode are determined.

Received: 28.02.2019
Revised: 28.02.2019
Accepted: 16.05.2019

Language: English


 English version:
High Temperature, 2019, 57:5, 621–627

Bibliographic databases:


© Steklov Math. Inst. of RAS, 2025