Abstract

We report the first gas temperature measurements in plasmas to our knowledge obtained by filtered Rayleigh scattering (FRS). A narrow-linewidth Ti:sapphire laser is used as the illumination source, and a mercury filter provides strong suppression of elastic background. We perform measurements in weakly ionized glow discharges in pure argon and in an argon-plus-1%-nitrogen mixture. Where possible, we verify the FRS technique by comparing filtered measurements with unfiltered measurements. We present point measurements of axial temperature with uncertainties of less than 5%. We use a planar scheme to obtain radial temperature profiles with uncertainties of 10%.

© 2002 Optical Society of America

Temperature measurements by coherent Rayleigh scattering

Xingguo Pan, Peter F. Barker, A. Meschanov, J. H. Grinstead, Mikhail N. Shneider, and Richard B. Miles
Opt. Lett. 27(3) 161-163 (2002)

Ultraviolet filtered Rayleigh scattering temperature measurements with a mercury filter

Azer P. Yalin and Richard B. Miles
Opt. Lett. 24(9) 590-592 (1999)

Two-dimensional temperature measurements in particle loaded technical flames by filtered Rayleigh scattering

D. Müller, R. Pagel, A. Burkert, V. Wagner, and W. Paa
Appl. Opt. 53(9) 1750-1758 (2014)

Temperature imaging in nonpremixed flames by joint filtered Rayleigh and Raman scattering

Sean P. Kearney, Robert W. Schefer, Steven J. Beresh, and Thomas W. Grasser
Appl. Opt. 44(9) 1548-1558 (2005)

Simultaneous two-dimensional flow velocity and gas temperature measurements by use of a combined particle image velocimetry and filtered Rayleigh scattering technique

Dieter Most and Alfred Leipertz
Appl. Opt. 40(30) 5379-5387 (2001)