Advances in Thomson scattering diagnostics of plasmas used for chemical analysis
Advances in Thomson scattering diagnostics of plasmas used for chemical analysis
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DOI：
10.1016/j.sab.2020.106045
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发表时间：
2021-02
期刊：
影响因子：
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通讯作者：
K. Finch;Dong Zhang;Y. She;A. Hernandez;G. Gamez
中科院分区：
文献类型：
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作者：
K. Finch;Dong Zhang;Y. She;A. Hernandez;G. Gamez
等离子体在化学分析中的应用非常普遍，并且人们不断探索新的等离子体在该领域的潜在应用。然而，等离子体中发生的特征过程的基本机制尚未完全了解。自由电子驱动化学反应，对于许多等离子体固有过程至关重要，并且负责维持放电，同时控制其他物质之间的动能转移。汤姆逊散射 (TS) 是一种强大的等离子体诊断技术，用于阐明数密度、动力学温度和能量分布函数等基本电子参数。 TS 的优点包括提供自由电子的直接、径向和时间分辨探测，对等离子体几乎没有扰动，无需事先假设局部热力学平衡条件，以及同时进行电子密度/温度测量。本综述的目的是对 TS 理论和实验要求进行简要解释，并重点介绍在最新 TS 出版物中发现的选定的新颖仪器进展和有关化学分析等离子体的见解，这些是之前其他综述中未涵盖的。
The use of plasmas for chemical analysis is prevalent and new sorts are continually being explored for potential applications in this field. However, the underlying mechanisms of characteristic processes that occur in plasmas are not completely understood. Free electrons drive chemical reactions, are essential to many plasma inherent processes, and are responsible for sustaining the discharge while governing the kinetic energy transfer between other species. Thomson scattering (TS) is a powerful plasma diagnostic technique for elucidating the fundamental electron parameters of number density, kinetic temperature, and energy distribution function. TS advantages include providing the direct, radially and temporally resolved probing of free electrons, with little-to-no perturbation of the plasma, with no prior assumptions of local thermodynamic equilibrium conditions, and simultaneous electron density/temperature measurements. The aim of this review is to provide a brief explanation of the TS theory and the experimental requirements, as well as highlight selected novel instrumentation advances and insights about chemical analysis plasmas discovered in the most recent TS publications, not previously covered in other reviews.