Theoretical Kinetics Investigation of Krypton Dielectric Barrier Discharge for UV Lamp
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Theoretical Kinetics Investigation of Krypton Dielectric Barrier Discharge for UV Lamp W. Benstâali1,2 · N. Larbi Daho Bachir1,3 · S. Bendella1 · A. Belasri1 · Z. Harrache1 · B. Caillier4 Received: 30 April 2020 / Accepted: 21 July 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract This work presents an electric and kinetic study of homogeneous dielectric barrier discharge (DBD) in pure krypton (Kr). The electrical characterization and kinetic analyses of the DBD in Kr are performed. The plasma formation in DBD, excited by sinusoidal voltage at high pressure, was studied. The discharge development, with homogeneous model approach and using extended kinetic scheme, is simulated. The study is based on a spatial homogeneity model including the plasma chemistry, the electrical circuit and the Boltzmann equations’. The temporal variations of discharge voltage, dielectrics voltage, discharge current, electric field and species concentrations are calculated. The plasma kinetics is discussed with the aim to finding the optimal efficiency. The photon generation, under typical operating conditions, was investigated and discussed. The effect of some parameters on the excilamp like pressure, applied voltage, and frequency are investigated in order to identify the optimal parameters for maximum luminous efficiency in the UV range. Keywords Dielectric barrier discharge (DBD) · Krypton · Kinetic scheme · Excilamp · UV range · Efficiency
Introduction Dielectric barrier discharges (DBDs), also referred to as barrier discharge or silent discharge, have been for a long time exclusively related to the generation of ozone gas for decontamination and purification of water and area [1, 2]. Although used since more * Z. Harrache [email protected] 1
LPPMCA Laboratory of Plasma Physics, Conductive Materials and Their Applications, University of Science and Technology of Oran Mohamed Boudiaf, 31000 Oran, Algeria
2
Faculty of Sciences and Technology, Abdel Hamid Ibn Badiss University, B. P. 227, Route de Belhacel, 27000 Mostaganem, Algeria
3
Institut des Sciences et Techniques Appliquées, Université d’Oran, 1 Ahmed Benn Bella, 31000 Oran, Algeria
4
DPHE, University of Toulouse, Champollion National University Institute, Place de Verdun, 81012 Albi Cedex 9, France
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Plasma Chemistry and Plasma Processing
than hundred years, DBDs still to be one of the most important UV sources for the generation of non-thermal plasmas at atmospheric pressure [3, 4]. The application of equilibrium discharge plasma generated by DBDs is of continuous interest for surface treatment [5–7], pollution control [8, 9], agriculture [10, 11], light power, CO2 laser [12, 13], plasma display panels [14, 15]. DBD-based plasma sources have been also explored for plasma life-science applications. They were used into bacteria inactivation [16], packaging [17], and other sensitive products. More recently, DBD has been utilized in various therapeutic applications including sterilization [18], blood coagulat
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