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Atomic oxygen density measurement of a nanosecond pulsed helium plasma jet in ambient air

机译:环境空气中纳秒级脉冲氦等离子体射流的原子氧密度测量

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Non-thermal atmospheric-pressure, helium plasma jet was generated in ambient air with a hollow electrode-based device that was powered by 100 ns, 6 kV pulses. The promising biomedical application of this cold plasma jet for biofilm-mediated infectious disease control1 motivates diagnostic studies of the reactive plasma species that may contribute significantly to the bactericidal activity. Temporal development and spatial distribution of atomic oxygen density in the pulsed plasma jet were measured using two-photon absorption laser-induced fluorescence spectroscopy. Radially symmetric, the atomic oxygen density distribution along the axis exhibits a wave-like propagating behavior. The entrainment effect of the ambient air on the production of atomic oxygen is discussed.
机译:使用以100 ns,6 kV脉冲供电的中空电极型设备在环境空气中产生非热大气压氦等离子体射流。这种冷等离子体射流在生物膜介导的传染病控制中的有前途的生物医学应用 1 激发了对可能对杀菌活性有重要贡献的反应性血浆物种的诊断研究。使用双光子吸收激光诱导的荧光光谱法测量脉冲等离子体射流中原子氧密度的时间变化和空间分布。径向对称,沿轴的原子氧密度分布表现出波状传播行为。讨论了环境空气对原子氧产生的夹带作用。

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