EFFECT OF DENSITY AND TEMPERATURE PROFILE OF He GAS IN INTERFEROMETER METHOD USING LASER He-Ne
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Date
2018-02-05
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University of Eloued جامعة الوادي
Abstract
This work presents an optical diagnosis using interferometer method (Fig.1) using
laser He-Ne. The density and the temperature are visualized by studying the interferograms of
He (helium) gas medium subjected to a stationary DC (Corona Discharge) at atmospheric
pressure [1-2]. The density is extracted from the phase shifting introduced by the studied
medium, and the temperature is deduced from the ideal gas law. The refractive index is
related to the density through the Gladstone–Dale equation [3]. The experimental set up that
we have applied here is assumed to be cylindrically symmetric and the distance between
electrodes, equals 10 mm. The obtained results show that the rate variation of the density
increase from 10 to 45% and the temperature is varying between 300 to 500 K in all the
space.
Description
Séminaire National Sur Laser Solaire Et Matériaux ElOeued 5-6 Février 2018
Keywords
EFFECT OF DENSITY, TEMPERATURE , GAS, INTERFEROMETER METHOD , USING LASER He-Ne