铝/Al2O3 粉末混合物对陀螺仪脉冲微波辐射的吸收研究

IF 0.8 4区 地球科学 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC Radiophysics and Quantum Electronics Pub Date : 2024-05-13 DOI:10.1007/s11141-024-10319-6
Z. A. Zakletsky, S. E. Andreev, A. S. Sokolov
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引用次数: 0

摘要

我们研究了铝微粒对微波陀螺辐射的吸收,同时考虑到了 Al2O3 纳米氧化物薄膜。实验探索了金属质量浓度为 10% 的 Al/Al2O3 粉末填充物中金属微粒(线性尺寸从 1 到 400 μm)的加热过程。研究考虑了电磁波在由石英板和 Al2O3 薄层组成的双层结构上衍射时场强的增加。介绍了利用球体的米氏解法和有效介质近似法计算来自频率为 75 GHz 的陀螺仪的微波辐射的吸收和反射功率,以计算介质外壳中铝粒子的光学特性。结果表明,当微波脉冲功率超过 400 kW 时,在最大电场强度(7.5 kV/cm)区域内的铝局部加热到熔化温度的时间不超过陀螺仪脉冲持续时间(小于 8 ms)。
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Study of the Absorption of the Pulsed Microwave Radiation of a Gyrotron in an Al/Al2O3 Powder Mixture

We study the absorption of microwave gyrotron radiation by aluminum microparticles taking into account the Al2O3 nano-oxide film. The heating process of metal microparticles (linear size from 1 to 400 μm) in Al/Al2O3 powder fillings for a metal mass concentration of 10% has been experimentally explored. The increase in the field strength of electromagnetic waves upon diffraction on a double-layer structure consisting of a quartz plate and a thin layer of Al2O3 is considered. The calculation of the absorbed and reflected power of microwave radiation from a gyrotron at a frequency of 75 GHz using the Mie solution for a sphere and the effective medium approximation to calculate the optical properties of aluminum particles in a dielectric shell is presented. It is shown that for a microwave pulse power of more than 400 kW, local heating of aluminum in the region of the maximum electric field strength (7.5 kV/cm) to the melting temperature is observed within times not exceeding the gyrotron pulse duration (less than 8 ms).

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来源期刊
Radiophysics and Quantum Electronics
Radiophysics and Quantum Electronics ENGINEERING, ELECTRICAL & ELECTRONIC-PHYSICS, APPLIED
CiteScore
1.10
自引率
12.50%
发文量
60
审稿时长
6-12 weeks
期刊介绍: Radiophysics and Quantum Electronics contains the most recent and best Russian research on topics such as: Radio astronomy; Plasma astrophysics; Ionospheric, atmospheric and oceanic physics; Radiowave propagation; Quantum radiophysics; Pphysics of oscillations and waves; Physics of plasmas; Statistical radiophysics; Electrodynamics; Vacuum and plasma electronics; Acoustics; Solid-state electronics. Radiophysics and Quantum Electronics is a translation of the Russian journal Izvestiya VUZ. Radiofizika, published by the Radiophysical Research Institute and N.I. Lobachevsky State University at Nizhnii Novgorod, Russia. The Russian volume-year is published in English beginning in April. All articles are peer-reviewed.
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