Analysis of Gas Composition of a Cold Plasma Jet Generated on the Basis of Atmospheric Pressure Microwave Discharge

IF 0.9 4区物理与天体物理 Q4 PHYSICS, FLUIDS & PLASMAS

Plasma Physics Reports Pub Date : 2024-06-25 DOI:10.1134/S1063780X24600488

S. N. Antipov, M. Kh. Gadzhiev, M. V. Il’ichev, A. S. Tyuftyaev, A. V. Chistolinov, D. I. Yusupov

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Abstract

Using chromatography, the gas composition in a cold plasma jet, which is a flowing afterglow of a microwave glow discharge at atmospheric pressure, is analyzed. The plasma jet is formed by the interaction of the discharge plasma with atmospheric air behind the outlet of the 6-electrode plasma torch, electrical power to which is supplied from the waveguide microwave (2.45 GHz) plasmatron. An analysis of the gas samples of the jet shows that when plasma-forming argon flows through the microwave discharge, hydrogen and methane are formed behind the discharge region, and the concentration of carbon monoxide increases by 5–6 times. The reactive oxygen species in the cold plasma jet is studied using liquid chromatography of an aqueous solution of isopropyl alcohol after treatment with the plasma jet. It is found that because of plasma treatment, partial oxidation of isopropyl alcohol to acetone occurs. This makes it possible to consider acetone as an indicator of reactive oxygen species (hydroxyl radicals, atomic oxygen and ozone) in a cold plasma jet.

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基于大气压微波放电产生的冷等离子体射流的气体成分分析

摘要利用色谱法分析了冷等离子体射流中的气体成分，冷等离子体射流是大气压下微波辉光放电的流动余辉。等离子体射流是由放电等离子体与 6 电极等离子体炬出口后的大气空气相互作用形成的，其电源由波导微波（2.45 GHz）等离子体加速器提供。对射流气体样本的分析表明，当形成等离子体的氩气流经微波放电时，在放电区后面形成了氢气和甲烷，一氧化碳的浓度增加了 5-6 倍。利用等离子体射流处理异丙醇水溶液后的液相色谱法研究了冷等离子体射流中的活性氧。研究发现，由于等离子处理，异丙醇部分氧化成丙酮。因此，可以将丙酮视为冷等离子体射流中活性氧（羟基自由基、原子氧和臭氧）的指示剂。

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来源期刊

Plasma Physics Reports 物理-物理：流体与等离子体

CiteScore

1.90

自引率

36.40%

发文量

104

审稿时长

4-8 weeks

期刊介绍： Plasma Physics Reports is a peer reviewed journal devoted to plasma physics. The journal covers the following topics: high-temperature plasma physics related to the problem of controlled nuclear fusion based on magnetic and inertial confinement; physics of cosmic plasma, including magnetosphere plasma, sun and stellar plasma, etc.; gas discharge plasma and plasma generated by laser and particle beams. The journal also publishes papers on such related topics as plasma electronics, generation of radiation in plasma, and plasma diagnostics. As well as other original communications, the journal publishes topical reviews and conference proceedings.