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Proceedings Paper

Optical nonuniformities of nonequilibrium turbulent gas flow in fast-axial-flow CO2 laser
Author(s): Vladislav Ya. Panchenko; Michail G. Galushkin; Vladimir S. Golubev; Yuri N. Zavalov
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Paper Abstract

The luminescence method and the method of dual-beam shear interferometry were used to perform the measurements of spatial and time characteristics of molecular gas subsonic turbulent flow fluctuations under strong vibrational non- equilibrium. Gas-discharge tubes of fast-axial-flow CO2 laser served as the investigation object. A turbulent component of gas density fluctuations has been separated by method of frequency selection of the registered signal. The spectrum of density pulsation has been determined, as well as the amplitude dependence of small-scale inhomogeneities on energy input has been specified. A degree of cross correlation of fluctuations of wave-front phase incursion in the turbulent flow has been evaluated under non-equilibrium conditions of electric discharge.

Paper Details

Date Published: 3 November 1999
PDF: 10 pages
Proc. SPIE 3760, High-Resolution Wavefront Control: Methods, Devices, and Applications, (3 November 1999); doi: 10.1117/12.367583
Show Author Affiliations
Vladislav Ya. Panchenko, Institute of Laser and Information Technologies (Russia)
Michail G. Galushkin, Institute of Laser and Information Technologies (Russia)
Vladimir S. Golubev, Institute of Laser and Information Technologies (Russia)
Yuri N. Zavalov, Institute of Laser and Information Technologies (Russia)


Published in SPIE Proceedings Vol. 3760:
High-Resolution Wavefront Control: Methods, Devices, and Applications
John D. Gonglewski; Mikhail A. Vorontsov, Editor(s)

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