Influence of an electric field on near-surface processes in laser processing of metals
S. V. Vasil'ev, A. Yu. Ivanov
Yanka Kupala State University of Grodno
It is shown that by varying the external electric field with different polarity from 0 to 106 V m-1 in the course of laser processing with the mean radiation flux density -106 W cm-2 the change in the evolution features of the plasma torch at the surface of some metals (Cu, Al, Sn, Pb) at early stages is quantitative rather than qualitative. At the same time the characteristic size of the target material droplets, carried out from the irradiated zone, becomes essentially (by several times) smaller as the amplitude of the external electric field strength grows, independently of its polarity.
laser radiation, electric field, plasma formation, gravitycapillary waves.
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Quantum Electronics, 2012, 42:2, 170–174
42.62.Cf, 52.38.Mf, 83.60.Np
S. V. Vasil'ev, A. Yu. Ivanov, “Influence of an electric field on near-surface processes in laser processing of metals”, Kvantovaya Elektronika, 42:2 (2012), 170–174 [Quantum Electron., 42:2 (2012), 170–174]
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