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Electron characterization in weakly ionized collisional plasmas: from principles to techniques
Advances in Physics: X ( IF 6 ) Pub Date : 2018-10-23 , DOI: 10.1080/23746149.2018.1526114
Sanghoo Park 1 , Wonho Choe 1, 2 , Se Youn Moon 3 , Suk Jae Yoo 4
Affiliation  

Weakly ionized plasmas at or near 1 atm pressure, or atmospheric-pressure plasmas, have received increasing attention due to their scientific significance and potential for use in a variety of applications, particularly for medicine, agriculture, and food. However, there is a large imbalance between scientific research on plasma physics and applications, which is partly due to the considerable differences in the characteristics of these plasmas compared with those of low-pressure plasmas. This discrepancy is particularly related to the difficulty in performing plasma diagnostics for highly collisional plasmas. Information on electrons (such as the electron density and temperature) is essential since electrons play a dominant role in the generation of active species related to the physical and chemical processes inside the plasma. So far, limited diagnostics have been available for electrons such as Thomson scattering and optical emission diagnostics based on equilibrium models. Here, we review the available diagnostic methods along with their merits and limitations for characterizing electrons in weakly ionized collisional plasmas. Particular attention is paid to continuum radiation-based spectroscopy, which facilitates multidimensional imaging of electron density and temperature. The future impact of these plasmas on relevant fields (i.e. laboratory and industrial plasmas and their applications) is also addressed.



中文翻译:

弱电离碰撞等离子体中的电子表征:从原理到技术

在1 atm压力或接近1 atm压力下的弱电离等离子体或大气压等离子体,由于其科学意义和在各种应用(尤其是医药,农业和食品)中的应用潜力而受到越来越多的关注。但是,等离子体物理科学研究与应用之间存在很大的不平衡,部分原因是与低压等离子体相比,这些等离子体的特性存在很大差异。这种差异尤其与对高度碰撞的血浆执行血浆诊断的难度有关。关于电子的信息(例如电子密度和温度)至关重要,因为电子在与等离子体内部的物理和化学过程有关的活性物种的产生中起着主导作用。至今,有限的诊断方法已经可以用于电子,例如Thomson散射和基于平衡模型的光发射诊断方法。在这里,我们回顾了可用的诊断方法,以及它们在弱电离碰撞等离子体中表征电子的优缺点。要特别注意基于连续辐射的光谱学,它有助于电子密度和温度的多维成像。还讨论了这些等离子体对相关领域(即实验室和工业等离子体及其应用)的未来影响。我们回顾了可用的诊断方法,以及在弱电离碰撞等离子体中表征电子的优缺点。要特别注意基于连续辐射的光谱学,它有助于电子密度和温度的多维成像。还讨论了这些等离子体对相关领域(即实验室和工业等离子体及其应用)的未来影响。我们回顾了可用的诊断方法,以及在弱电离碰撞等离子体中表征电子的优缺点。要特别注意基于连续辐射的光谱学,它有助于电子密度和温度的多维成像。还讨论了这些等离子体对相关领域(即实验室和工业等离子体及其应用)的未来影响。

更新日期:2018-10-23
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