Open AccessGeneration of atmospheric pressure plasma in molecular gas flows
Author(s) -
K. P. Savkin,
А. С. Бугаев,
V. I. Gushenets,
A. V. Vizir,
A. Nikolaev,
Е. М. Окс,
G. Yu. Yushkov,
M. V. Shandrikov,
V. P. Frolova,
Bin Zhang,
Kaixiong Gao
Publication year - 2019
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 - 10.1088/1742-6596/1393/1/012052
Subject(s) - nozzle , plasma , anode , argon , cathode , atmospheric pressure , volumetric flow rate , glow discharge , jet (fluid) , analytical chemistry (journal) , atomic physics , thermocouple , plasma cleaning , materials science , current (fluid) , plume , chemistry , electrode , mechanics , thermodynamics , physics , oceanography , quantum mechanics , chromatography , composite material , geology
We have investigated an atmospheric pressure discharge, similar to a plasma jet, in the N 2 and CO 2 gas flows. We have also carried out an experimental modeling with the argon Ar flow. It has been shown that the use of a tantalum cathode and a copper anode provides a stable discharge in the nitrogen and carbon dioxide flows. We have studied the dependence of the discharge voltage on the discharge current (VAC). Optical emission spectra of discharge glow was investigated also. Using a single probe and a thermocouple, we have studied the axial distribution of the floating potential in the plasma jet and the gas temperature at the anode nozzle exit of the plasma generator. In applying to polymer surface modification, we have determined the optimal operation conditions: gas flow rate up to 5 l·min −1 ; continuous or pulsed working regime; discharge current about 80 mA; pulse duration up to 10 µs; pulse repetition rate 50 kHz.