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Proceedings Paper

Capillary thermoconcentration instability and processes of heat and mass transfer in laser technology
Author(s): Vladimir S. Maiorov
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Paper Abstract

The paper gives a description of the phenomenon that has a considerable, and often a decisive, influence on the course of physical processes under laser radiation interaction with a substance having at least one liquid phase. The explanation of the essence of this phenomenon lies at the intersection of two branches of science: mechanics of liquids and gases, and physical chemistry (thermodynamics of heterogeneous systems). Capillary thermo-concentration instability (CTCI) is present at any non-isotropic input of energy to a heterogeneous thermodynamical system having several phases. This instability manifests itself at the phase boundary and causes processes of mass transfer, redistribution of components, emergence of new phases, relaxation vibrations. This phenomenon is most pronounced in local processes at interaction of laser radiation with matter. The theory and practice of this phenomenon unite and describe a new class of effects widely spread in nature, which play a decisive role in many physical and chemical processes and find even more various spheres of practical application. A number of examples of capillary thermo- concentration instability application are given: separation of liquid mixtures to components under thermal action of laser beam; a new method of thermal silver-free photography; control of liquid metal convection in laser alloying.

Paper Details

Date Published: 30 April 2002
PDF: 13 pages
Proc. SPIE 4644, Seventh International Conference on Laser and Laser-Information Technologies, (30 April 2002); doi: 10.1117/12.464136
Show Author Affiliations
Vladimir S. Maiorov, Institute on Laser and Information Technologies (Russia)


Published in SPIE Proceedings Vol. 4644:
Seventh International Conference on Laser and Laser-Information Technologies

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