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Experimental investigations of the microconvective instability in optically induced gratings

A. Meżulis - E. Blūms

Insitute of Physics, University of Latvia, Salaspils-1, LV-2169, Latvia

In the present work attention is paid to some notable effects in the Forced Rayleigh Scattering experiments with an applied magnetic field, ∇T ||H, which have not been analyzed before. The work deals with an idea that the experimentally observed effects are caused by a microconvection . The dimensionless numbers Cm and \Rm, which are responsible for the onset of microconvection, are calculated from the experiments as well as from the linear stability analysis in a Hele-Shaw approximation . In the framework of the performed experimental data processing, an original method is developed to define the values of diffusion and Soret coefficients and their field dependence. Figs 7, Refs 10.

Magnetohydrodynamics 40, No. 4, 337-344, 2004 [PDF, 0.13 Mb]

Copyright: Institute of Physics, University of Latvia
Electronic edition ISSN 1574-0579
Printed edition ISSN 0024-998X