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Your search keyword '"Mezhevov, V. S."' showing total 63 results
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63 results on '"Mezhevov, V. S."'

3. Separation of Carbon Isotopes by High-Power IR Laser Radiation.

Author

Kuz'menko, V. A., Laptev, V. B., Mezhevov, V. S., Pigul'skii, S. V., and Ryabov, E. A.

Subjects
CARBON dioxide lasers, LASER beams, ISOTOPE separation, PULSED lasers, CARBON isotopes
Abstract

Results of the development of an industrial technology for the enrichment of the 13C isotope on the basis of the multiphoton dissociation of the molecules of a substance under the action of the radiation of a pulsed CO2 laser are presented. The world's first industrial plant for the 13C enrichment "Uglerod" is described. The physical bases for the effective production of 13C with a concentration higher than 99% are considered. [ABSTRACT FROM AUTHOR]

Published
2024
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4. Experimental Study of the Drift Motion of SF6 Molecules under the Action of CO2-Laser Radiation.

Author

Voskoboev, A. A., Kuz'menko, V. A., Mezhevov, V. S., and Sautin, A. R.

Subjects
GAS mixtures, GAS dynamics, OPTICAL tweezers, TRANSPORT theory, RADIATION
Abstract

Experiments were continued to study the physical nature of the drift motion of SF6 molecules under the action of radiation from a repetitively pulsed CO2-laser. To explain the physical nature of the effect, such phenomena as a change in the transport cross-section during laser excitation of molecules, the phenomenon of optical tweezers, thermal diffusion are considered. However, the most reasonable physical explanation of the nature of this effect is the fractionation of a gas mixture as a result of gas dynamic diffusion at the front of a cyclically expanding gas (a variant of barodiffusion). [ABSTRACT FROM AUTHOR]

Published
2024
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7. Repetitively pulsed TEA CO2 laser and its application for second harmonic generation in ZnGeP2 crystal

Author

Koval, L V, Grezev, A N, Niz, V G, Yakunin, V P, Mezhevov, V S, Goryachkin, D A, Sergeev, V V, and Kalintsev, A G

Abstract

Experimental results are presented on the development of a radiation source emitting at a wavelength of 4.775 um with a pulse energy up to 50 mJ and an average power up to several watts in short pulse trains. A TEA CO2 laser and a nonlinear converter based on a ZnGeP2 crystal, which are specially designed for these experiments, are described. The main limitations of nonlinear conversion and possible ways to overcome these limitations are considered.

Published
2015

16. Average power limitations in high-repetition-rate pulsed gas lasers at 10.6 and 16 μm

Author

Baranov, V. Yu., Kazsakov, S. A., Malyuta, D. D., Mezhevov, V. S., Napartovich, A. P., Nisiev, V. G., Orlov, M. Yu., Starodubtsev, A. I., and Starostin, A. N.

Abstract

Processes resulting in average power limitations in high-repetition-rate pulsed lasers are studied. The description and performance of a CO_2 laser with an average power up to 10 kW as well as of an optically pumped CF_4 laser are given.

Published
1980

17. Materials processing by high-repetition-rate pulsed excimer and carbon dioxide lasers

Author

Anisimov, V. N., Arutyunyan, R. V., Baranov, V. Yu., Bolshov, L. A., Velikhov, E. P., Dolgov, V. A., Ilyin, A. I., Kovalevich, A. M., Kraposhin, V. S., Malyuta, D. D., Matveeva, L. A., Mezhevov, V. S., Pismennyi, V. D., Sebrant, A. Yu., Stepanov, Yu. Yu., and Stepanova, M. A.

Abstract

Recently created pulsed gas lasers with high pulse repetition rate produce radiation in the IR [ V. Yu. Baranov , in Molecular Gas Lasers. Physics Applications, VelikhovE. P., Ed. ( Mir, Moscow, 1981), pp. 252– 255] and the UV ( V. Yu. Baranov , in Proceedings, International Conference on Lasers, 14–18 Dec. 1981, pp. 968– 974) regions of the spectrum. These lasers are widely used in research on the selective excitation of matter. This field of study includes laser isotope separation { G. I. Abdushelashvili , Kvantovaya Elektron. (Moscow)9, 743 ( 1982) [ Sov. J. Quantum Electron.12, 459 ( 1982)]} and laser-induced chemical reactions [ V. Yu. Baranov , Preprint IAE 3693/13 ( Moscow, 1982)]. But there are few publications dealing with uses of high-repetition-rate lasers for materials processing, although this problem undoubtedly is of considerable scientific interest.

Published
1984

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