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首页> 外文期刊>Physics of plasmas >Experimental investigation of gas flow rate and electric field effect on refractive index and electron density distribution of cold atmospheric pressure-plasma by optical method, Moire deflectometry
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Experimental investigation of gas flow rate and electric field effect on refractive index and electron density distribution of cold atmospheric pressure-plasma by optical method, Moire deflectometry

机译：光学法测定岩体偏转测定的气体流速和电场对冷大气压 - 等离子体折射率和电子密度分布的实验研究

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摘要

Nowadays, cold atmospheric-pressure (CAP) helium plasma jets are widely used in material processing devices in various industries. Researchers often use indirect and spectrometric methods for measuring the plasma parameters which are very expensive. In this paper, for the first time, characterization of CAP, i.e., finding its parameters such as refractive index and electron density distribution, was carried out using an optical method, Moire deflectometry. This method is a wave front analysis technique based on geometric optics. The advantages of this method are simplicity, high accuracy, and low cost along with the non-contact, non-destructive, and direct measurement of CAP parameters. This method demonstrates that as the helium gas flow rate decreases, the refractive index increases. Also, we must note that the refractive index is larger in the gas flow consisting of different flow rates of plasma comparing with the gas flow without the plasma. Published by AIP Publishing.
机译：如今，冷气压（帽）氦等离子体喷射广泛用于各个行业的材料加工装置。 研究人员通常使用间接和光谱法测量非常昂贵的等离子体参数。 在本文中，首次表征帽，即找到其参数，例如折射率和电子密度分布，使用光学方法进行莫尔义偏移测定。 该方法是基于几何光学的波前分析技术。 该方法的优点是简单性，高精度和低成本以及盖参数的非接触，非破坏性和直接测量。 该方法表明，随着氦气流量的降低，折射率增加。 此外，我们必须注意的是，在与没有等离子体的气流比较的等离子体的不同流速组成的气流中，折射率较大。 通过AIP发布发布。

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