Gas Temperature Determination of an AC Arc Discharge at Atmospheric Pressure in Air Using a Mach–Zehnder Interferometer

2006 ◽  
Vol 34 (1) ◽  
pp. 115-120 ◽  
Author(s):  
J.A. Lopez ◽  
D. Echeverry ◽  
G. Zambrano ◽  
L.F. Castro ◽  
P. Prieto
Keyword(s):  
Atmospheric Pressure ◽  
Arc Discharge ◽  
Zehnder Interferometer ◽  
Gas Temperature ◽  
Temperature Determination ◽  
Ac Arc ◽  
Ac Arc Discharge ◽  
Gas Temperature Determination ◽  
Mach Zehnder Interferometer

On the Gas Temperature Determination from Van Der Waals Broadening in Argon - Neon Microwave Plasmas

2011 ◽  
Vol 20 (4) ◽  
Author(s):  
José Muñoz ◽  
Milan S. Dimitrijević ◽  
M. D. Calzada
Keyword(s):  
Atmospheric Pressure ◽  
Van Der Waals ◽  
Spectral Lines ◽  
Gas Temperature ◽  
Microwave Plasmas ◽  
Temperature Determination ◽  
Gas Temperature Determination

AbstractRecently we proposed a method to determine the gas temperature using the van der Waals broadening of atomic spectral lines for atmospheric pressure Ar-He plasma. Here our investigations are continued by studying the influence of Ar*-Ne interactions in order to enlarge the applicability of the proposed method for the determination of gas temperature in argon - neon mixtures. The Ar I 425.9 nm line is found to be suitable for the gas temperature determination.

scholarly journals Carbon Nanostructures Production by AC Arc Discharge Plasma Process at Atmospheric Pressure

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
Shenqiang Zhao ◽  
Ruoyu Hong ◽  
Zhi Luo ◽  
Haifeng Lu ◽  
Biao Yan
Keyword(s):  
Electron Microscopy ◽  
Carbon Nanotubes ◽  
Atmospheric Pressure ◽  
Carbon Nanostructures ◽  
Discharge Plasma ◽  
Arc Discharge ◽  
Plasma Process ◽  
Wide Range ◽  
Ac Arc ◽  
Ac Arc Discharge

Carbon nanostructures have received much attention for a wide range of applications. In this paper, we produced carbon nanostructures by decomposition of benzene using AC arc discharge plasma process at atmospheric pressure. Discharge was carried out at a voltage of 380 V, with a current of 6 A–20 A. The products were characterized by scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), powder X-ray diffraction (XRD), and Raman spectra. The results show that the products on the inner wall of the reactor and the sand core are nanoparticles with 20–60 nm diameter, and the products on the electrode ends are nanoparticles, agglomerate carbon particles, and multiwalled carbon nanotubes (MWCNTs). The maximum yield content of carbon nanotubes occurs when the arc discharge current is 8 A. Finally, the reaction mechanism was discussed.

Gas Temperature Determination in Argon-Helium Plasma at Atmospheric Pressure using van der Waals Broadening

2008 ◽  
Author(s):  
Jose Muñoz ◽  
Milan S. Dimitrijević ◽  
Cristina Yubero ◽  
María Dolores Calzada ◽  
Marco Antonio Gigosos ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Van Der Waals ◽  
Helium Plasma ◽  
Gas Temperature ◽  
Temperature Determination ◽  
Gas Temperature Determination

scholarly journals Plasma Temperature Determination of Hydrogen Containing High-Frequency Electrodeless Lamps by Intensity Distribution Measurements of Hydrogen Molecular Band

2010 ◽  
Vol 2010 ◽  
pp. 1-8 ◽  
Author(s):  
Zanda Gavare ◽  
Gita Revalde ◽  
Atis Skudra
Keyword(s):  
Intensity Distribution ◽  
High Frequency ◽  
Plasma Temperature ◽  
Gas Temperature ◽  
Applied Current ◽  
Temperature Determination ◽  
Diagonal Band ◽  
Gas Temperature Determination ◽  
Good Agreement

The goal of the present work was the investigation of the possibility to use intensity distribution of the Q-branch lines of the hydrogen Fulcher-α diagonal band (d3Πu−→a3∑g+ electronic transition; Q-branch with v=v′=2) to determine the temperature of hydrogen containing high-frequency electrodeless lamps (HFEDLs). The values of the rotational temperatures have been obtained from the relative intensity distributions for hydrogen-helium and hydrogen-argon HFEDLs depending on the applied current. The results have been compared with the method of temperature derivation from Doppler profiles of He 667.8 nm and Ar 772.4 nm lines. The results of both methods are in good agreement, showing that the method of gas temperature determination from the intensity distribution in the hydrogen Fulcher-α (2-2)Q band can be used for the hydrogen containing HFEDLs. It was observed that the admixture of 10% hydrogen in the argon HFEDLs significantly reduces the gas temperature.

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