Role of Bulk Vaporization in the Dynamics of Laser-Induced Erosion Plumes of Metals |
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Authors: | V K Goncharov A F Chernavskii |
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Institution: | (1) A. N. Sevchenko Institute of Applied Physical Problems, Belarusian State University, 7 Kurchatov Str., Minsk, 220064, Belarus |
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Abstract: | In different regimes of exposure of metals to pulsed laser radiation, we show the role played by the liquid-drop phase formed from the target material in a laser-induced erosion plume due to bulk vaporization, in the dynamics of this plume. For some metals, the ranges of power densities of the acting laser radiation, at which the condensed-phase particles influence the passage of laser radiation to the target surface, have been determined experimentally. The mechanism of realization of a low-threshold breakdown has been revealed. |
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Keywords: | laser plasma erosion plume condensed-phase particles plasma breakdown laser probing plasma spectroscopy |
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