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Planar Spontaneous Raman-Scattering Spectroscopy for Reacting Jet-Flow Diagnostics Using Lyot–Ehman Tunable Filter


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Abstract

The spatial-density distribution in burning a premixed methane–air swirling turbulent jet has been studied by measuring the intensity of the Stokes branch of spontaneous Raman scattering for vibrational–rotational transitions in nitrogen. An optical system comprising a Nd:YAG laser and the liquid-crystalline Lyot–Ehman tunable filter has been created and tested by measuring the temperature and density fields in a cone-shaped laminar flame. It has been established that the difference of data obtained using the Stokes component of Raman scattering in nitrogen and its ratio to the anti-Stokes component does not exceed 5% in a temperature range from 300 to 1800 K.

About the authors

D. K. Sharaborin

Kutateladze Institute of Thermophysics, Siberian Branch; Novosibirsk State University

Author for correspondence.
Email: sharaborin.d@gmail.com
Russian Federation, Novosibirsk, 630090; Novosibirsk, 630090

D. M. Markovich

Kutateladze Institute of Thermophysics, Siberian Branch; Novosibirsk State University

Email: sharaborin.d@gmail.com
Russian Federation, Novosibirsk, 630090; Novosibirsk, 630090

V. M. Dulin

Kutateladze Institute of Thermophysics, Siberian Branch; Novosibirsk State University

Email: sharaborin.d@gmail.com
Russian Federation, Novosibirsk, 630090; Novosibirsk, 630090

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