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Proceedings Paper

Measurement of plasma parameter in Dielectric Barrier Discharge (DBD) by Moiré deflectometry technique
Author(s): Fatemeh Salimi Meidanshahi; Khosro Madanipour; Babak Shokri; Mohammad Reza Khani; Hamid Razavi Borzoki
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Paper Abstract

In this work it is shown that the refractive index and temperature distribution of atmospheric Dielectric Barrier Discharge (DBD) plasmas are measured by Moiré deflectometry. Fringe analysis is used to calculate Moiré deflection and to evaluate refractive index in different points of plasma. By Sa-Ha equation and considering the first ionization, the dependence of refractive index and temperature, electrons, ions and molecules number densities of DBD plasma is obtained. By knowing this relation between plasma parameters, the spatial distributions of the plasma refractive index and temperature are evaluated. The advantages of this method are: simplicity, non-contact, non-destructive measurement, low cost, high accuracy and direct measurement of refractive index gradient.

Paper Details

Date Published: 22 June 2015
PDF: 7 pages
Proc. SPIE 9525, Optical Measurement Systems for Industrial Inspection IX, 952545 (22 June 2015); doi: 10.1117/12.2184853
Show Author Affiliations
Fatemeh Salimi Meidanshahi, Shahid Beheshti Univ. (Iran, Islamic Republic of)
Khosro Madanipour, Amirkabir Univ. of Technology (Iran, Islamic Republic of)
Babak Shokri, Shahid Beheshti Univ. (Iran, Islamic Republic of)
Mohammad Reza Khani, Shahid Beheshti Univ. (Iran, Islamic Republic of)
Hamid Razavi Borzoki, Shahid Beheshti Univ. (Iran, Islamic Republic of)


Published in SPIE Proceedings Vol. 9525:
Optical Measurement Systems for Industrial Inspection IX
Peter Lehmann; Wolfgang Osten; Armando Albertazzi Gonçalves, Editor(s)

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