Dynamics of cavitation bubbles generated by multi-pulse laser irradiation of a solid target in water

The effect of the second and later pulses on the expansion dynamics of the cavitation bubble produced by multi-pulse microchip laser irradiation of a Cu target in water has been investigated. We clarified the bubble dynamics by taking shadowgraph images and measuring the bubble radius as a function...

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Bibliographic Details
Published in:Applied physics. A, Materials science & processing Materials science & processing, 2013-07, Vol.112 (1), p.209-213
Main Authors: Tamura, Ayaka, Sakka, Tetsuo, Fukami, Kazuhiro, Ogata, Yukio H.
Format: Article
Language:English
Subjects:
Bubbles
Cavitation
Characterization and Evaluation of Materials
Condensed Matter Physics
Dynamic tests
Dynamics
Explosions
Irradiation
Lasers
Machines
Manufacturing
Mathematical models
Nanotechnology
Optical and Electronic Materials
Physics
Physics and Astronomy
Processes
Surfaces and Interfaces
Thin Films
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Summary:The effect of the second and later pulses on the expansion dynamics of the cavitation bubble produced by multi-pulse microchip laser irradiation of a Cu target in water has been investigated. We clarified the bubble dynamics by taking shadowgraph images and measuring the bubble radius as a function of time. Shock waves were also measured to investigate the explosive expansion of the bubble. As a result, the second and later pulses did not cause an explosive expansion, and the ablation of the target by these pulses was rather mild, although they had a certain contribution to the expansion of the bubble. The energies given to the bubble expansion from the first pulse and also from the second pulse were estimated by comparing the experimental results with the calculation based on the Rayleigh model.
ISSN:0947-8396
1432-0630
DOI:10.1007/s00339-012-7291-x