Online diagnosis of electron excitation temperature in CH4+H2 discharge plasma at atmospheric pressure by optical emission spectra

2008 ◽  
Vol 51 (12) ◽  
pp. 1892-1896 ◽  
Author(s):  
JinHua Cui ◽  
ZhenFeng Xu ◽  
JiaLiang Zhang ◽  
QiuYue Nie ◽  
GenHui Xu ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Discharge Plasma ◽  
Emission Spectra ◽  
Optical Emission ◽  
Electron Excitation ◽  
Excitation Temperature ◽  
Optical Emission Spectra

scholarly journals The Effect of Oxygen Admixture with Argon Discharges on the Impact Parameters of Atmospheric Pressure Plasma Jet Characteristics

2021 ◽  
Vol 11 (15) ◽  
pp. 6870
Author(s):  
Atif H. Asghar ◽  
Ahmed Rida Galaly
Keyword(s):  
Flow Rate ◽  
Atmospheric Pressure ◽  
Atmospheric Pressure Plasma ◽  
Emission Spectra ◽  
Optical Emission ◽  
Plasma Jet ◽  
Flow Rates ◽  
Jet Length ◽  
Pressure Plasma ◽  
Optical Emission Spectra

Dry argon (Ar) discharge and wet oxygen/argon (O2/Ar) admixture discharge for alternating current atmospheric pressure plasma jets (APPJs) were studied for Ar discharges with flow rates ranging from 0.2 to 4 slm and for O2/Ar discharges with different O2 ratios and flow rates ranging from 2.5 to 15 mslm. The voltage–current waveform signals of APPJ discharge, gas flow rate, photo-imaging of the plasma jet length and width, discharge plasma power, axial temperature distribution, optical emission spectra, and irradiance were investigated. Different behavior for varying oxygen content in the admixture discharge was observed. The temperature recognizably decreased, axially, far away from the nozzle of the jet as the flow rate of dry argon decreased. Similar behavior was observed for wet argon but with a lower temperature than for dry argon. The optical emission spectra and the dose rate of irradiance of a plasma jet discharge were investigated as a function of plasma jet length, for dry and wet Ar discharges, to determine the data compatible with the International Commission on Non-Ionizing Radiation Protection (ICNIRP) data for irradiance exposure limits of the skin, which are suitable for the disinfection of microbes on the skin without harmful effects, equivalent to 30 μJ/mm2.

scholarly journals Detection of trace heavy metals using atmospheric pressure glow discharge by optical emission spectra

High Voltage ◽  
2019 ◽  
Vol 4 (3) ◽  
pp. 228-233 ◽  
Author(s):  
Xiao Li ◽  
De‐Zheng Yang ◽  
Hao Yuan ◽  
Jian‐Ping Liang ◽  
Tao Xu ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Glow Discharge ◽  
Atmospheric Pressure ◽  
Emission Spectra ◽  
Optical Emission ◽  
Atmospheric Pressure Glow Discharge ◽  
Trace Heavy Metals ◽  
Pressure Glow Discharge ◽  
Optical Emission Spectra

scholarly journals Degradation of telmisartan (TELMA-H) compounds in aqueous solution using non-thermal atmospheric pressure plasma jet

2019 ◽  
Vol 1 (1) ◽  
pp. 46-52
Author(s):  
Vasu D ◽  
Raji A ◽  
Pandiyaraj K.N ◽  
Padmanabhan P.V.A ◽  
Kandhavelu V
Keyword(s):  
Aqueous Solution ◽  
Atmospheric Pressure ◽  
Atmospheric Pressure Plasma ◽  
Emission Spectra ◽  
Optical Emission ◽  
Plasma Jet ◽  
Atmospheric Pressure Plasma Jet ◽  
Pressure Plasma ◽  
Spectroscopy Optical ◽  
Optical Emission Spectra

In this study we investigate the degradation of telmisartan (Telma-H) in simulated aqueous solution using non-thermal atmospheric pressure plasma jet (APPJ). Aqueous solution containing Telma-H was treated with APPJ as a function of applied potential and reaction time. The degradation of Telma-H was investigated by means of UV-Visible spectroscopy. Optical emission spectra (OES) of the plasma jet was used to identify the reactive species that contributed to degrade Telma H compounds. The variation of pH and conductivity of the plasma treated Telma H aqueous solution was also measured.

scholarly journals Optical Emission Spectra of Oxygen Plasma Produced by Radio-Frequency Plasma

2009 ◽  
Vol 18 (2) ◽  
pp. 102-107
Author(s):  
Do-Yeob Kim ◽  
Min-Su Kim ◽  
Tae-Hoon Kim ◽  
Ghun-Sik Kim ◽  
Hyun-Young Choi ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Oxygen Plasma ◽  
Emission Spectra ◽  
Optical Emission ◽  
Radio Frequency Plasma ◽  
Frequency Plasma ◽  
Optical Emission Spectra

scholarly journals REFORMING OF ETHANOL IN PLASMA-CATALYTIC SYSTEM WITH DC AND AC ROTATING GLIDING DISCHARGE

2021 ◽  
pp. 117-121
Author(s):  
O.A. Nedybaliuk ◽  
T.A. Tereshchenko ◽  
I.I. Fedirchyk ◽  
P.V. Tyshchuk ◽  
V.P. Demchina
Keyword(s):  
Synthesis Gas ◽  
Emission Spectra ◽  
Optical Emission ◽  
Reaction Chamber ◽  
Catalytic Reforming ◽  
Instantaneous Power ◽  
Wide Aperture ◽  
Ethanol Reforming ◽  
Gliding Discharge ◽  
Optical Emission Spectra

The article presents the results of the investigation of the reforming of ethanol into synthesis gas using a plasmacatalytic system with either AC or DC wide-aperture rotating gliding discharge. Current and voltage oscillograms of the wide-aperture rotating gliding discharge were measured. The time-dependence of the instantaneous power of the discharge in the air was built. The photographs of the discharge in the airflow and discharge during the ethanol reforming were compared. The optical emission spectra of the plasmas of the torches of AC and DC wide-aperture rotating gliding discharges were studied. The rotational and vibrational temperatures of the plasma torch in the reaction chamber were determined. The results of the gas-chromatography of the synthesis gas produced during the plasm-catalytic reforming of ethanol using either AC or DC rotating gliding discharge are presented.

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