Development of a high-efficient and uniform microwave-induced atmospheric pressure linear plasma jet source based on a square coaxial structure

IF 3.6 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-09-30 DOI:10.1063/5.0288621

Li Wu, Yan Chen, Ao Qu, Nana Zhang, Daming Fan, Junwu Tao, Fei Cheng

引用次数: 0

Abstract

A microwave-induced atmospheric pressure linear plasma jet source at 2.45 GHz based on a square coaxial structure was proposed. The device was capable of generating a plasma jet by exciting argon gas with 50 W microwave incident power. By increasing the microwave power or gas flow rate, the width and height of the resulting linear plasma jet gradually expanded. Experimental results showed that a linear plasma jet with a width of 30 mm and a height of 8 mm was produced with 200 W microwave incident power and 40 l/min gas flow rate. Optical emission spectra measurements at different positions showed that the produced linear plasma has good homogeneity. The electron density of the generated linear plasma reached 1015 cm−3. The energy utilization of this plasma source was more than 90%. This portable plasma device offers great potential for linear plasma applications in areas such as food processing and environmental treatment.

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基于方形同轴结构的高效均匀微波诱导大气压力线性等离子体射流源的研制

提出了一种基于方形同轴结构的2.45 GHz微波诱导大气压线性等离子体射流源。该装置能够以50w的微波入射功率激发氩气产生等离子体射流。通过增加微波功率或气体流速，产生的线性等离子体射流的宽度和高度逐渐扩大。实验结果表明，在200 W微波入射功率和40 l/min气体流速条件下，可产生宽度为30 mm、高度为8 mm的线性等离子体射流。不同位置的发射光谱测量表明，产生的线性等离子体具有良好的均匀性。生成的线性等离子体的电子密度达到1015 cm−3。该等离子体源的能量利用率达90%以上。这种便携式等离子体设备为线性等离子体在食品加工和环境处理等领域的应用提供了巨大的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.