Liquid tin droplet fragmentation by ultra-short laser pulse. (January 2019)

• Record Type: Journal Article
• Authors: Grigoryev, S Yu; Dyachkov, S A; Khokhlov, V A; Zhakhovsky, V V; Parshikov, A N; Inogamov, N A
• Is Part Of: Journal of physics. Volume 1147(2019)
• Publication Date: 2019-01
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1147/1/012067
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: The fragmentation of a liquid metal droplet induced by a nanosecond laser pulse has been studied well. However, the fragmentation mechanism may be different, when a sub-picosecond laser pulse is applied. To discover the details of the fragmentation process, we perform a hydrodynamic simulation of a liquid tin droplet irradiated by a femtosecond laser pulse. We have found that the pressure pulse induced by an instantaneous temperature growth in the skin layer propagates from the one side of the surface of a spherical droplet and focuses in its center; at the release a big cavity is formed at the center of a droplet; the pressure wave release at the backside surface may cause the spallation.