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arXiv 1810.09191physics.plasm-ph
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膨胀过程中羽流动力学和等离子体密度的研究

Study of plume dynamics and plasma density during its expansion

G. Veda Prakash, Kiran Patel, Narayan Behera, Ajai Kumar

摘要:

等离子体羽流中的电子密度是等离子体羽流的关键参数之一,它在产生生物和工业应用所需的关键活性物种方面起着重要作用。在这项工作中,实验进行估计的空间变化的等离子体密度在一个稳定的羽流。利用ICCD相机获得的时间分辨图像和羽流测量数据估算等离子体密度。我们观察到等离子体密度从玻璃喷嘴到羽流尖端逐渐增加。这种等离子体密度的增加是由于漂移速度、电荷和羽流的面积限制的减小的组合效应。此外,ICCD相机图像的强度图与更大的曝光时间验证了在羽流尖端的密度增加。沿着羽流的等离子体密度提供了关于羽流暴露时间的近似值以及它对非常敏感的目标产生的影响的信息。考虑到单个等离子体装置,在羽流中等离子体密度的空间变化是若干生物和工业应用的未来要求。

英文摘要:

The electron density is one of the crucial parameters in plasma plume, which plays a major role in producing the key reactive species required for biological and industrial applications. In this work, experiments are performed to estimate the spatial variation of plasma density in a steady plume. The time-resolved images obtained from the ICCD camera, plume current measurements are utilized for estimating the plasma density. We observed the plasma density increases from the glass nozzle to the plume tip. This increase in plasma density is due to the combined effect of reduction of drift velocity, charge, and area confinement of plume. Further, the intensity plots of the ICCD camera images obtained with larger exposure time validate the increased density at the plume tip. The plasma density along the plume gives information about the approximation to the plume exposure time desired and the impact it creates on the very sensitive targets. The spatial variation of plasma density in a plume is a futuristic requirement for several biological and industrial applications considering a single plasma device.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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