A Microwave Discharge in High-Velocity Flows Initiated by a Half-Wave Antenna

IF 0.9 4区 物理与天体物理 Q4 PHYSICS, FLUIDS & PLASMAS
K. N. Kornev, A. A. Logunov, O. S. Surkont, T. R. Abushaev, A. L. Volynets, S. A. Dvinin
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引用次数: 0

Abstract

A microwave discharge in high-velocity (150–250 m/s) air flows induced on a half-wave vibrator is studied. A cw magnetron microwave generator with a frequency of 2.45 GHz and an output power of up to 5 kW was used for initiation of the microwave discharge. The high-speed video imaging was used for studying the discharge structure, determining the diameter and length of the plasma channel as a function of flow velocity and pressure. Electron concentration and temperature, along with characteristic gas temperature, were determined based on the optical spectra. The possibility of using this microwave discharge for ignition of hydrocarbon–air mixtures in combustion chambers of ramjet engines is proved experimentally.

Abstract Image

Abstract Image

由半波天线引发的高速流动中的微波放电
摘要 研究了在半波振动器上诱导的高速(150-250 m/s)气流中的微波放电。启动微波放电使用的是频率为 2.45 GHz、输出功率高达 5 kW 的 cw 磁控管微波发生器。高速视频成像用于研究放电结构,确定等离子体通道的直径和长度与流速和压力的函数关系。根据光学光谱确定了电子浓度和温度以及特征气体温度。实验证明了利用这种微波放电点燃冲压式喷气发动机燃烧室中碳氢化合物-空气混合物的可能性。
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来源期刊
Plasma Physics Reports
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.
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