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The Effect of Seed Electrons on the Repeatability of APPJ Propagation

机译：种子电子对APPJ传播可重复性的影响

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is needed for the plasma bullets to propagate in repeatable mode. Besides, when the plasma bullets exhibit random behavior, there are two potential reasons that could result in the unrepeatability, one is the randomness of the ignition and another one is the inconsistence of the propagation speed. This is not clear either. In this paper, the effect of the seed electron density on the repeatability of the plasma jets is investigated. The seed electron density plays essential role in the propagation of plasma plume which is in either repeatable mode or random mode depending on the frequency of the applied voltage and the mixture percentage of the working gas. By measuring the propagation velocities and the ignition delay time, it is found that the propagation velocities of the plasma plume are independent of the seed electron density. However, the jitter of the ignition delay time strongly depends on the frequency of the applied voltage and the mixture percentage of the working gas. After detail analyzing the experiment results, it is concluded that the minimum seed electron density required for the plasma bullet to propagat in repeatable mode is on the order of 10
机译：需要等离子子弹以可重复模式传播。此外，当等离子体子弹表现出随机行为时，有两个可能导致不可重复性的潜在原因，一个是点火的随机性，另一个是传播速度的不一致性。这也不清楚。在本文中，研究了种子电子密度对等离子体射流重复性的影响。种子电子密度在等离子体羽流的传播中起着至关重要的作用，取决于施加电压的频率和工作气体的混合百分比，等离子体羽呈可重复模式或随机模式。通过测量传播速度和点火延迟时间，发现等离子羽流的传播速度与种子电子密度无关。但是，点火延迟时间的抖动很大程度上取决于施加电压的频率和工作气体的混合百分比。通过对实验结果的详细分析，可以得出结论，等离子体子弹以可重复模式进行传播所需的最小种子电子密度约为10

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