Title :
Characteristic Investigation of an Atmospheric-Pressure Microwave N2–Ar Plasma Torch
Author :
Shou-Zhe Li ; Chuan-Jie Chen ; Jialiang Zhang ; Yong-Xing Wang ; Hongda Li
Author_Institution :
Key Lab. of Mater. Modification by Laser, Dalian Univ. of Technol., Dalian, China
Abstract :
Impedance matching is implemented to stabilize an atmospheric-pressure waveguide-based N2-Ar plasma torch with the aid of the use of swirl gas. Optical emission spectroscopy is employed to diagnose the plasma torch with respect to the population of the electronic state N+2 (B 2Σ+u ) and N2(B 3Πg) versus the absorbed power and the ratio of N2 component in the Ar-N2 mixture by the measurement of the emission of intensity. The qualitative discussion based on the reaction routes is delivered to interpret the experimental results well.
Keywords :
argon; gas mixtures; high-frequency discharges; nitrogen; plasma diagnostics; plasma filled waveguides; plasma sources; plasma torches; Ar; Ar-N2 mixture ratio; N2-Ar plasma torch; N2; absorbed power; atmospheric pressure plasma torch; electronic state population; emission intensity; impedance matching; microwave plasma torch; optical emission spectroscopy; swirl gas; waveguide based plasma torch; Discharges (electric); Electron tubes; Microwave theory and techniques; Nitrogen; Optical waveguides; Plasmas; Atmospheric pressure; microwave; plasma; plasma.;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2015.2415779
