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Features of the Dynamics of Erosion Plumes at the Acting of Intensive Nanosecond Laser Pulses on a Graphite Target in Vacuum
https://doi.org/10.47612/0514-7506-2022-89-6-770-776
Abstract
The temporal characteristics of the glow intensity of erosion laser plumes near the surface under the action of nanosecond laser pulses on a carbon target are experimentally studied. The interaction of laser radiation with the destruction products of plume is minimal due to the formation of erosion plasma with a delay relative to the acting laser pulse. Using a modernized spectrometer, the spectral characteristics of an erosion laser plume near the surface of a carbon target with a time resolution of 10-8 s are studied, and 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.
About the Authors
V. K. Goncharov
A. N. Sevchenko Institute of Applied Physical Problems, Belarusian State University
Belarus
Belarus
Minsk
M. V. Puzyrev
A. N. Sevchenko Institute of Applied Physical Problems, Belarusian State University
Belarus
Belarus
Minsk
V. Yu. Stupakevich
Yanka Kupala State University of Grodno
Belarus
Belarus
Grodno
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Review
For citations:
Goncharov V.K., Puzyrev M.V., Stupakevich V.Yu. Features of the Dynamics of Erosion Plumes at the Acting of Intensive Nanosecond Laser Pulses on a Graphite Target in Vacuum. Zhurnal Prikladnoii Spektroskopii. 2022;89(6):770-776. (In Russ.) https://doi.org/10.47612/0514-7506-2022-89-6-770-776
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