Laser‐induced shock waves in liquids
Laser‐induced shock waves in liquids
复制标题
液体中激光引起的冲击波
DOI：
10.1063/1.89179
复制
发表时间：
1976
影响因子：
4
通讯作者：
F. Kneubühl
中科院分区：
文献类型：
--
作者：
D. C. Emmony;M. Siegrist;F. Kneubühl
TEA CO2激光脉冲与吸收液体表面相互作用的高速纹影摄影显示了液体中复杂激波结构的形成。比较了10.6 μm处不同吸收系数液体中的激波结构。在四氯化碳中，除了在液体表面形成的半球形波之外，在液体的主体中还产生圆柱形波。柱面波领先于半球波，这种分离被解释为初始相位的差分衰减。这意味着在最初的0.5 μs内，激波速度高于声速。
High‐speed schlieren photography of the interaction of a TEA CO2 laser pulse with the surface of absorbing liquids shows the formation of a complex shock structure in the liquid. The shock structure in liquids with different absorption coefficients at 10.6 μm is compared. In carbon tetrachloride a cylindrical wave is generated in the bulk of the liquid in addition to the hemispherical wave which is formed at the liquid surface. The cylindrical wave leads the hemispherical one, and this separation is interpreted as differential attenuation in the initial phase. This implies a shock velocity above the sound speed within the first 0.5 μs.