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arXiv · 1901.00739

Liquid tin droplet fragmentation by ultra-short laser pulse

S. Yu. Grigoryev·S. A. Dyachkov·V. A. Khokhlov·V. V. Zhakhovsky·A. N. Parshikov·N. A. Inogamov
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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 subpicosecond 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.

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S. Yu. Grigoryev, S. A. Dyachkov, V. A. Khokhlov, V. V. Zhakhovsky, A. N. Parshikov, N. A. Inogamov. 2018-12-15. Liquid tin droplet fragmentation by ultra-short laser pulse. https://doi.org/10.1088/1742-6596%2F1147%2F1%2F012067

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