Suspended liquid particle disturbance on laser-induced blast wave and low density distribution
Suspended liquid particle disturbance on laser-induced blast wave and low density distribution
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DOI：
10.1063/1.4999042
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发表时间：
2017-12
影响因子：
4.6
通讯作者：
Takahiro Ukai;H. Zare-Behtash;K. Kontis
中科院分区：
文献类型：
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作者：
Takahiro Ukai;H. Zare-Behtash;K. Kontis
实验研究了静止气体中悬浮液体颗粒的杂质效应对激光气体击穿的影响。本研究的重点是研究杂质对激波结构以及低密度分布的影响。用532 nm Nd：YAG激光束以188 mJ/脉冲聚焦于充满直径为0.9 ± 0.63 μm的悬浮液体颗粒的腔室。在粒子击穿中，沿束流路径沿着多次气体击穿产生多个激波。冲击波结构可分为四种类型：（1）冲击波半径相近的双冲击波，（2）下部击穿处冲击波半径较大的双冲击波，（3）上部击穿处冲击波半径较大的双冲击波，（4）三重冲击波。独立的冲击波相互作用，增强了冲击波阵面后方的横向冲击强度。三重冲击波产生了史上最强的冲击波...
The impurity effect of suspended liquid particles on the laser-induced gas breakdown was experimentally investigated in quiescent gas. The focus of this study is the investigation of the influence of the impurities on the shock wave structure as well as the low density distribution. A 532 nm Nd:YAG laser beam with an 188 mJ/pulse was focused on the chamber filled with suspended liquid particles 0.9 ± 0.63 μm in diameter. Several shock waves are generated by multiple gas breakdowns along the beam path in the breakdown with particles. Four types of shock wave structures can be observed: (1) the dual blast waves with a similar shock radius, (2) the dual blast waves with a large shock radius at the lower breakdown, (3) the dual blast waves with a large shock radius at the upper breakdown, and (4) the triple blast waves. The independent blast waves interact with each other and enhance the shock strength behind the shock front in the lateral direction. The triple blast waves lead to the strongest shock wave in ...