Investigation of 50 Hz Pulsed DC Nitrogen Plasma with Active Screen Cage by Trace Rare Gas Optical Emission Spectroscopy

A. SAEED; A. W. KHAN; M. SHAFIQ; F. JAN; M. ABRAR; M. ZAKA-UL-ISLAM; M. ZAKAULLAH

doi:10.1088/1009-0630/16/4/05

Plasma Science and Technology > 2014 > 16(4): 324-328. > DOI: 10.1088/1009-0630/16/4/05

A. SAEED, A. W. KHAN, M. SHAFIQ, F. JAN, M. ABRAR, M. ZAKA-UL-ISLAM, M. ZAKAULLAH. Investigation of 50 Hz Pulsed DC Nitrogen Plasma with Active Screen Cage by Trace Rare Gas Optical Emission Spectroscopy[J]. Plasma Science and Technology, 2014, 16(4): 324-328. DOI: 10.1088/1009-0630/16/4/05

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Investigation of 50 Hz Pulsed DC Nitrogen Plasma with Active Screen Cage by Trace Rare Gas Optical Emission Spectroscopy

1 Department of Physics, Gomal University, 29050, D. I. Khan, Pakistan 2 Department of Physics, Quaid-i-Azam University, 45320, Islamabad, Pakistan 3 Department of Physics, Hazara University Mansehra, Pakistan 4 Plasmant Department of Chemistry, Univesity of Antwerp campus DriEkin, 2610 WilrijkAntwerp, Belgium

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Received Date: June 18, 2012

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Abstract

Abstract

Optical emission spectroscopy is used to investigate the nitrogen-hydrogen with trace rare gas (4% Ar) plasma generated by 50 Hz pulsed DC discharges. The filling pressure varies from 1 mbar to 5 mbar and the current density ranges from 1 mA·cm ⁻² to 4 mA·cm ⁻² . The hydrogen concentration in the mixture plasma varies from 0% to 80%, with the objective of identifying the optimum pressure, current density and hydrogen concentration for active species ([N] and
[N₂ ]) generation. It is observed that in an N ₂ -H₂ gas mixture, the concentration of N atom density decreases with filling pressure and increases with current density, with other parameters of the discharge kept unchanged. The maximum concentrations of active species were found for 40% H₂ in the mixture at 3 mbar pressure and current density of 4 mA·cm ⁻²
- TRG-OES,
- DC glow discharge,
- reactive species

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References (19)

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