Open AccessExperimental studies of the spectral characteristics of a free glow discharge in the wavelength range of 340-440 nm
Author(s) -
N. O. Bezverkhnii,
N. A. Monakhov,
М. В. Петренко,
T. A. Lapushkina,
V. A. Sakharov,
S. A. Poniaev,
S. V. Bobashev
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1697/1/012210
Subject(s) - analytical chemistry (journal) , wavelength , cathode , glow discharge , spectral line , rotational–vibrational spectroscopy , spectroscopy , atmospheric temperature range , plasma , materials science , atomic physics , chemistry , physics , excited state , thermodynamics , optoelectronics , chromatography , quantum mechanics , astronomy
Non-equilibrium air plasma generated in free glow discharge is characterized by optical emission spectroscopy techniques in the wavelength range of 340–440 nm. The rotational and vibrational temperature are studied as a function of distance from the electrode, to find out differences in the distribution of plasma parameters along with the discharge axis. In this work, the rotational and the vibrational temperature is determined from rovibrational spectra of second positive N 2 system. It is observed that N 2 + / N 2 intensity ratio increases from anode to cathode along the discharge axis.