Cavitation and spallation in liquid metal droplets produced by subpicosecond pulsed laser radiation

The deformation and fragmentation of liquid metal microdroplets by intense subpicosecond Ti:sapphire laser pulses is experimentally studied with stroboscopic shadow photography. The experiments are performed at a peak intensity of 10^{14}W/cm^{2} at the target's surface, which produces shock wa...

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Bibliographic Details
Published inPhysical review. E Vol. 95; no. 3-1; p. 031101
Main Authors Krivokorytov, M S, Vinokhodov, A Yu, Sidelnikov, Yu V, Krivtsun, V M, Kompanets, V O, Lash, A A, Koshelev, K N, Medvedev, V V
Format Journal Article
LanguageEnglish
Published United States 01.03.2017
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Summary:The deformation and fragmentation of liquid metal microdroplets by intense subpicosecond Ti:sapphire laser pulses is experimentally studied with stroboscopic shadow photography. The experiments are performed at a peak intensity of 10^{14}W/cm^{2} at the target's surface, which produces shock waves with pressures in the Mbar range. As a result of such a strong impact, the droplet is transformed into a complex-shaped hollow structure that undergoes asymmetrical expansion and eventually fragments. The hollow structure of the expanding target is explained by the effects of cavitation and spallation that follow the propagation of the laser-induced shock wave.
ISSN:2470-0053
DOI:10.1103/PhysRevE.95.031101