scholarly journals Emission Spectroscopy of OH Radical in Water-Argon Arc Plasma Jet

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Alan Mašláni ◽  
Viktor Sember
Keyword(s):  
Central Region ◽  
Emission Spectroscopy ◽  
Plasma Torch ◽  
Emission Spectra ◽  
Plasma Jet ◽  
Line Of Sight ◽  
Thermal Processes ◽  
Oh Radical ◽  
Arc Plasma ◽  
Large Area

Emission spectra of OH radical are studied in the plasma jet generated by a plasma torch with hybrid water-argon stabilization. Plasma jet is located in a chamber with pressures 4 kPa and 10 kPa. In spite of high temperatures of produced plasma, OH spectra are observed in a large area of the jet. OH spectra are used to obtain rotational temperatures from the Boltzmann plots of resolved rotational lines. Due to line-of-sight integration of radiation, interpretation of the temperatures is not straightforward. It seems that excited OH molecules can be formed by various mechanisms, mainly in the outer parts of the jet, where thermal processes are not as dominant as in the hot central region.

MOTION OF ANODE ATTACHMENT AND FLUCTUATIONS OF PLASMA JET IN DC ARC PLASMA TORCH

1997 ◽  
Vol 1 (2) ◽  
pp. 167-178 ◽  
Author(s):  
Milan Hrabovsky ◽  
M. Konrad ◽  
Vladimir Kopecky ◽  
J. Hlina ◽  
J. Benes ◽  
...  
Keyword(s):  
Plasma Torch ◽  
Plasma Jet ◽  
Arc Plasma ◽  
Arc Plasma Torch ◽  
Dc Arc ◽  
Dc Arc Plasma Torch

Deposition of large area high quality diamond wafers with high growth rate by DC arc plasma jet

2000 ◽  
Vol 9 (9-10) ◽  
pp. 1673-1677 ◽  
Author(s):  
H. Guo ◽  
Z.L. Sun ◽  
Q.Y. He ◽  
S.M. Du ◽  
X.B. Wu ◽  
...  
Keyword(s):  
Growth Rate ◽  
High Growth ◽  
Plasma Jet ◽  
High Growth Rate ◽  
Arc Plasma ◽  
Large Area ◽  
High Quality ◽  
Dc Arc

Electrical and spectral property of cold arc plasma at atmospheric pressure

2012 ◽  
Vol 78 (6) ◽  
pp. 617-620
Author(s):  
YUAN ZHONG-CAI ◽  
SHI JIA-MING ◽  
CHEN ZONG-SHENG ◽  
XU BO
Keyword(s):  
Atmospheric Pressure ◽  
Arc Discharge ◽  
Rotational Temperature ◽  
Molecular Nitrogen ◽  
Atmospheric Pressure Plasma ◽  
Emission Spectra ◽  
Optical Emission ◽  
Plasma Jet ◽  
Ambient Air ◽  
Arc Plasma

AbstractAn atmospheric pressure plasma jet is generated with a cold arc discharge in ambient air. The current-voltage characteristics and optical emission spectra of plasma discharges are investigated. The molecular nitrogen (N2), hydroxyl radical (OH), and oxygen atom (O) are observed and analyzed. Based on the best fit of the simulated spectra of N2 (C3∏u+ − B3∏g+) band and OH (A2∑+ − X2∏) band transition and the experimentally recorded spectra, the rotational temperature and the vibrational temperature of atmospheric pressure cold arc plasma jet (APCAPJ) are estimated.

Spheroidization of Fe-Based Powders in Plasma Jet of DC Arc Plasma Torch and Application of These Powders in Selective Laser Melting

2020 ◽  
Vol 11 (3) ◽  
pp. 579-585
Author(s):  
A. V. Samokhin ◽  
A. A. Fadeev ◽  
N. V. Alekseev ◽  
M. A. Sinaysky ◽  
V. Sh. Sufiyarov ◽  
...  
Keyword(s):  
Selective Laser Melting ◽  
Plasma Torch ◽  
Plasma Jet ◽  
Arc Plasma ◽  
Laser Melting ◽  
Arc Plasma Torch ◽  
Dc Arc ◽  
Dc Arc Plasma Torch

Large area high quality diamond film deposition by high power DC arc plasma jet operating at gas recycling mode

2001 ◽  
Vol 10 (9-10) ◽  
pp. 1551-1558 ◽  
Author(s):  
F.X. Lu ◽  
W.Z. Tang ◽  
T.B. Huang ◽  
J.M. Liu ◽  
J.H. Song ◽  
...  
Keyword(s):  
High Power ◽  
Diamond Film ◽  
Plasma Jet ◽  
Film Deposition ◽  
Arc Plasma ◽  
Large Area ◽  
High Quality ◽  
Dc Arc ◽  
Gas Recycling

On-line diagnosis of O and OH radical in atmospheric pressure plasma jet by optical emission spectroscopy

2010 ◽  
Vol 22 (10) ◽  
pp. 2461-2464 ◽  
Author(s):  
刘忠伟 Liu Zhongwei ◽  
陈强 Chen Qiang ◽  
王正铎 Wang Zhengduo ◽  
杨丽珍 Yang Lizhen ◽  
李斌 Li Bin ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Emission Spectroscopy ◽  
Optical Emission Spectroscopy ◽  
Atmospheric Pressure Plasma ◽  
Optical Emission ◽  
Plasma Jet ◽  
Atmospheric Pressure Plasma Jet ◽  
Oh Radical ◽  
Pressure Plasma ◽  
On Line

scholarly journals Carbon transition efficiency and process cost in high-rate, large-area deposition of diamond films by DC arc plasma jet

2000 ◽  
Vol 9 (9-10) ◽  
pp. 1682-1686 ◽  
Author(s):  
W.X Pan ◽  
F.X Lu ◽  
W.Z Tang ◽  
G.F Zhong ◽  
Z Jiang ◽  
...  
Keyword(s):  
Diamond Films ◽  
Plasma Jet ◽  
High Rate ◽  
Arc Plasma ◽  
Large Area ◽  
Process Cost ◽  
Dc Arc ◽  
Area Deposition

scholarly journals Diagnostics of Hybrid Water/Argon Thermal Plasma Jet with Water, Ethanol and Their Mixture Injection to Plasma

2016 ◽  
Vol 3 (2) ◽  
pp. 62-65 ◽  
Author(s):  
M. Hlina ◽  
A. Maslani ◽  
J. Medricky ◽  
J. Kotlan ◽  
R. Musalek ◽  
...  
Keyword(s):  
Heat Flux ◽  
Flow Rate ◽  
Emission Spectroscopy ◽  
Plasma Torch ◽  
Plasma Jet ◽  
Low Flow ◽  
Suspension Spraying ◽  
Arc Power ◽  
Enthalpy Probe ◽  
Temperature Heat

A plasma torch with the water/argon stabilization of an arc is characterized by extremely hot and high velocity plasma together with the relatively low flow rate of plasma, therefore, the torch might be properly used for plasma suspension spraying. Enthalpy probe and emission spectroscopy measurements were carried out at constant arc power with the combination of the injection of water, ethanol or their mixture to the plasma jet to diagnose the changes in temperature, heat flux and other characteristics.

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