This article is cited in 4 papers

Interaction of laser radiation with matter

Possibility of applying a hydrodynamic model to describe the laser erosion of metals irradiated by high-intensity nanosecond pulses

K. V. Kozadaev

A. N. Sevchenko Research Institute of Applied Physical Problems, Belarusian State University, Minsk

Abstract: We report the results of experimental investigations of the production and development of plasma-vapour plumes upon irradiation of metal targets by nanosecond (10–100 ns) pulses with a high (10⁸–10¹⁰ W cm^-2) power density under atmospheric conditions. The transition from a quasi-stationary thermal mechanism of metal erosion to an explosion hydrodynamic one takes place when the radiation power density increases from 10⁸ to 10⁹ W cm^-2. The resultant experimental information is extremely important for the laser deposition of metal nanostructures under atmospheric conditions, which is possible only for power densities of 10⁸–10⁹ W cm^-2.

Keywords: laser erosion of metals, nanosecond laser pulse, laser erosion plume, thermal model, hydrodynamic model.

PACS: 42.62.-b, 52.38.Mf, 79.20.Eb, 81.15.Fg

Received: 15.11.2013
Revised: 15.01.2014

 English version: Quantum Electronics, 2014, 44:4, 325–329

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