Dynamics of cavitation bubbles generated by multi-pulse laser irradiation of a solid target in water
Dynamics of cavitation bubbles generated by multi-pulse laser irradiation of a solid target in water
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DOI：
10.1007/s00339-012-7291-x
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发表时间：
2012-10
期刊：
影响因子：
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通讯作者：
A. Tamura;T. Sakka;Kazuhiro Fukami;Y. Ogata
中科院分区：
文献类型：
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作者：
A. Tamura;T. Sakka;Kazuhiro Fukami;Y. Ogata
研究了多脉冲微片激光辐照水中铜靶时，第二脉冲和后续脉冲对空泡膨胀动力学的影响。我们通过拍摄阴影图像和测量气泡半径作为时间的函数来澄清气泡动力学。还测量了冲击波以研究气泡的爆炸膨胀。因此，第二次及以后的脉冲并没有引起爆炸性膨胀，这些脉冲对靶的烧蚀相当温和，尽管它们对气泡的膨胀有一定的贡献。通过将实验结果与基于瑞利模型的计算结果进行比较，估计了第一脉冲和第二脉冲给气泡膨胀的能量。
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.