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A numerical and experimental investigation of an axially symmetric RF plasma

Sutton, Yvonne C.; Johnson, Peter C.; Naidis, George V.; Sharp, David and Braithwaite, Nicholas St. J. (2012). A numerical and experimental investigation of an axially symmetric RF plasma. Journal of Physics D: Applied Physics, 45(45), article no. 455201.

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DOI (Digital Object Identifier) Link: https://doi.org/10.1088/0022-3727/45/45/455201
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Abstract

The characteristics of an atmospheric pressure, RF discharge in air were determined and compared with a 2D numerical model adapted from that used for a dc glow discharge. For a 15 mm discharge, the RF plasma's electrical and optical characteristics show a close correlation to several equivalent dc plasmas and to the results calculated from the adapted model. For an rms conduction current range of 11–30 mA, the rotational temperature varies between 2800 and 3200 K; the vibrational temperature shows a change of 3500–4000 K with near equilibrium conditions to the rotational state occuring in the central region of the discharge. Spatial measurements and modelling of nitrogen emission spectra identify the changes in the temperatures and dimensions along the vertical z-axis as well as the spatial dependence on the atomic and molecular species generated in the discharge.

Item Type: Journal Item
Copyright Holders: 2012 IOP Publishing Ltd
ISSN: 1361-6463
Project Funding Details:
Funded Project NameProject IDFunding Body
Not SetNot SetBowers & Wilkins Ltd
Keywords: instrumentation and measurement; plasma physics
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM)
Faculty of Science, Technology, Engineering and Mathematics (STEM) > Engineering and Innovation
Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
Item ID: 36008
Depositing User: Soraia Barroso
Date Deposited: 02 Jan 2013 14:12
Last Modified: 11 Sep 2017 15:31
URI: http://oro.open.ac.uk/id/eprint/36008
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