This paper investigates the interaction of a helium atmospheric plasma jet impinging onto liquid and metal targets using experimental and numerical techniques. The primary motivation of this study is to experimentally understand the effect of liquid and metal targets on the propagation of a plasma jet, and to numerically characterize chemical and electrical behavior at the plasma-water interface. This study is relevant in the ongoing research of plasma self-organization for the development of medical devices capable of self-adaptation. Experimental measurements are made to obtain ionization wave (IW) propagation, average electron density, and optical emission spectrum of the plasma near the interface for cases with copper and water targets and a freely expanding jet. The induced acidity on the plasma-treated water is measured by pH balance. Results confirm that both liquid and metal targets alter the IW propagation velocity and electric potential. IW average propagation speed is...

中文翻译：

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氦大气等离子体射流与目标之间的相互作用以及界面动力学

本文利用实验和数值技术研究了氦大气等离子体射流撞击到液体和金属靶上的相互作用。这项研究的主要动机是通过实验了解液体和金属靶对等离子流传播的影响，并在数值上表征等离子-水界面处的化学和电学行为。这项研究与正在进行的血浆自组织研究有关，能够开发能够自我适应的医疗设备。对于具有铜和水目标以及自由膨胀的射流的情况，进行了实验测量以获得界面附近的等离子体的电离波（IW）传播，平均电子密度和光发射光谱。通过pH平衡测量在等离子处理过的水上引起的酸度。结果证实液体靶和金属靶均改变了IW的传播速度和电势。IW的平均传播速度为...