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Effect of Gas Flow Rate on The Electron Temperature, Electron Density and Gas temperature for Atmospheric Microwave Plasma Jet

Author : Hammad R. Humud, Qusay A. Abbas and Aws F. Rauuf

Pages : 3819-3822
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In this work, parametric observations of atmospheric argon plasma excited by 2.45 GHz microwaves in an open-ended Pyrex tube are reported. Microwave power, discharge tube dimensions and argon flow rate were the major operating parameters. Electron temperature and electron density for argon plasma were measured by optical emission spectroscopy (OES) for gas flow rates (1, 2.5 and 5) min-1 and 850W of microwave power. The electron temperature was measured using Boltzmann plot method and ranged (2700-1761)K for above gases flow rates. The electron density that obtained by Stark broadening were ranged (1.6×1017 – 2×1017) cm-3. The electron density increased when gas flow rate was increased while, The electron temperature decreased when gas flow rate was increased. Gas temperature measured using infrared thermometer with five values of gas flow rate (1, 2.5, 5, 7.5 and 10) min-1 and ranged (32-60) ºC

Keywords: Microwave plasma jet, tapered waveguide, plasma parameters.

Article published in International Journal of Current Engineering and Technology, Vol.5, No.6 (Dec-2015)


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