Distribution of Pressure Wave Generated by Atmospheric Plasma Jet Measured With Optical Wave Microphone
Distribution of Pressure Wave Generated by Atmospheric Plasma Jet Measured With Optical Wave Microphone
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DOI：
10.1109/tps.2018.2866261
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发表时间：
2019-02
影响因子：
1.5
通讯作者：
F. Mitsugi;S. Kusumegi;T. Nakamiya;Y. Sonoda;T. Kawasaki
中科院分区：
文献类型：
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作者：
F. Mitsugi;S. Kusumegi;T. Nakamiya;Y. Sonoda;T. Kawasaki
等离子体射流有望用于生物医学应用。关于等离子体射流的电学和光学测量已有许多报道。从实际的角度来看，关于等离子体射流发射什么的重要观察之一是压力波，因为它们可以直接影响目标或穿透到液体、组织等中。我们利用了一种基于相位物体的夫琅和费衍射工作的光纤型光波麦克风，并在信号到噪声比，以检测与介质阻挡放电的电极配置的He等离子体射流内部产生的压力波。在不同的He气体流量下，研究了施加电压的频率对等离子体射流产生压力波的影响。讨论了等离子体射流装置下游不同距离处压力波沿着射流半径方向的分布。
Plasma jets have been expected to be used in biomedical applications. There have been many reports on electrical and optical measurements about the plasma jets. From the practical point of view, one of the important observations on what the plasma jets emit is pressure waves because they can directly affect targets or penetrate into liquid, tissues, and so on. In this paper, we utilized a fiber-type optical wave microphone that works based on the Fraunhofer diffraction of phase objects and improves upon a conventional optical wave microphone with regard to signal-to-noise ratio to detect pressure waves generated inside the He plasma jets with the electrode configuration of the dielectric barrier discharge. The frequency of the applied voltage dependence on the generation of pressure waves from plasma jets was investigated at different He gas flow rates. The distribution of the pressure waves along the radius direction of plasma jets at different distances downstream from the plasma jet device was discussed.