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Your search keyword '"Puzyrev, M. V."' showing total 29 results
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29 results on '"Puzyrev, M. V."'

9. Features of the Dynamics of Erosion Plumes from the Action of Intense Nanosecond Laser Pulses on a Graphite Target in a Vacuum.

Author

Goncharov, V. K., Puzyrev, M. V., and Stupakevich, V. Yu.

Subjects
*LASER pulses, *EROSION, *LASER beams, *GRAPHITE, *NANOCOATINGS
Abstract

The temporal characteristics of the glow intensity of erosion laser plumes near the surface of a carbon target under the action of nanosecond laser pulses are experimentally studied. The laser radiation interacts minimally with the destruction products in the plume because the erosion plasma forms with a delay relative to the acting laser pulse. The spectral characteristics of an erosion laser plume near the surface of a carbon target are studied using a modernized spectrometer with a time resolution of 10–8 s. The characteristic plasmodynamic times in the plume are ~10–6 s. It is shown that the emission of spectral lines of carbon appears with a delay relative to the glow of the continuous background when the erosion plume is cooled during expansion. The results of the study make it possible to optimize some characteristics of the laser-plasma source for the deposition of nanocoatings. [ABSTRACT FROM AUTHOR]

Published
2022
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26. Physical Processes Occurring in Treating a Substrate and Depositing Nanocoatings on It by a Laser–Plasma Method.

Author

Goncharov, V. K., Pekhota, A. A., and Puzyrev, M. V.

Subjects
NANOCOATINGS, ELECTRIC potential, LASER plasmas, ION energy, LASER deposition
Abstract

With the aim to simplify the automation of the process of sputtering nanocoatings by a laser–plasma method in vacuum, it is suggested to obtain an ion flow from a laser plasma and smoothly regulate the energy of ions and the density of their flow with the aid of the electric field potential. In treating the substrate surface by ion streams, the regimes of etching the surface have been determined, as well as creation of a pseudodiffusional layer of the target material in the near-surface zone of the substrate, and deposition of the laser target material on the substrate. [ABSTRACT FROM AUTHOR]

Published
2019
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