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A Numerical Investigation on the Reactive Species Generation and Its Correlation With Electron Energy in Atmospheric-Pressure Helium/Humid Air Plasma Jets
IEEE Transactions on Plasma Science ( IF 1.5 ) Pub Date : 2020-04-01 , DOI: 10.1109/tps.2020.2977692
Yadi Liu , Zhenyu Tan , Xiaolong Wang , Xiaotong Li

In this work, the reactive species generation and its correlation with electron energy in atmospheric-pressure helium/humid air plasma jets have been numerically investigated based on a needle-plane electrode geometry by using a 2-D fluid model. With the increase in the voltage amplitude, the averaged electron energy increases, the respective averaged densities of OH, O(1D), and O increase, while the averaged H2O2 density decreases. Therefore, between the species generation and electron energy, there is a negative correlation for H2O2 and a positive correlation for OH, O(1D), and O. In addition, as the humid air concentration increases, the averaged electron energy decreases, but the respective averaged densities of OH, O(1D), O, and H2O2 increase. Consequently, there is a negative correlation between these species generations and electron energy. Finally, this work shows that a proper high humid air concentration in the plasma jets applied for biomedicine may allow expected electron energy and also generate abundant reactive species.

中文翻译:

常压氦/湿空气等离子体射流中反应性物质生成及其与电子能相关性的数值研究

在这项工作中,基于针平面电极几何形状,通过使用二维流体模型,对常压氦气/潮湿空气等离子体射流中的活性物质生成及其与电子能量的相关性进行了数值研究。随着电压幅值的增加,平均电子能量增加,OH、O( 1 D) 和O -各自的平均密度增加,而平均H 2 O 2密度减小。因此,在物种生成和电子能量之间,H 2 O 2呈负相关,OH、O( 1 D) 和O -呈正相关。. 此外,随着潮湿空气浓度的增加,平均电子能量降低,但OH、O( 1 D)、O -和H 2 O 2各自的平均密度增加。因此,这些物种世代与电子能量之间存在负相关。最后,这项工作表明,用于生物医学的等离子体射流中适当的高湿空气浓度可以允许预期的电子能量并产生丰富的反应物种。
更新日期:2020-04-01
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