基于等离子体应用大功率陀螺仪的第五次回旋谐波陀螺倍增器

IF 0.8 4区 地球科学 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC Radiophysics and Quantum Electronics Pub Date : 2024-05-11 DOI:10.1007/s11141-024-10309-8
M. Yu. Glyavin, G. G. Denisov, I. V. Zheleznov, I. V. Zotova, A. M. Malkin, A. S. Sergeev
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引用次数: 0

摘要

我们从理论上研究了在用于等离子体应用的大功率回旋加速器中,通过在频率倍增机制下激发第五次回旋谐波来产生高功率(高达数瓦)太赫兹辐射源的可能性。之前的研究表明,陀螺仪中孤立(s = 4n + 1,n = 1、2、3、......)回旋谐波的有效激发是由于圆柱波导特征模的特殊性质,根据这一性质,电子束与两个具有渐近多截止频率的 TE 模同时共振的条件可以得到满足。对于第五次回旋谐波,这种方法在使用低频千瓦级回旋加速器的实验中进行了测试。根据观察到的效果,将陀螺仪用于等离子体将大大提高辐射功率和频率。主回旋共振发生在倍增效应的最佳磁场区域,为了抑制主回旋共振的杂散振荡,建议使用外部信号对回旋加速器进行频率锁定。这项工作基于一个平均自洽回旋加速器模型进行了模拟,结果表明,在最近开发的采用 TE19, 8 工作模式的亚兆瓦/0.25 太赫兹回旋加速器中,所述辐射方案可以在 1.25 太赫兹频率下以回旋频率的五次谐波辐射几瓦特的功率产生振荡。
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Gyromultipliers of the Fifth Cyclotron Harmonic Based on High-Power Gyrotrons for Plasma Applications

We study theoretically the possibility of creating sources of terahertz radiation of high (up to several watts) power based on excitation of the fifth cyclotron harmonic in the frequency multiplication regime in high-power gyrotrons intended for plasma applications. It was previously shown that effective excitation of isolated (s = 4n + 1, n = 1, 2, 3, . . . ) cyclotron harmonics in gyrotrons is due to the specific property of the eigenmodes of cylindrical waveguides, according to which the conditions for simultaneous resonance of an electron beam with two TE modes having asymptotically multiple cutoff frequencies can be fulfilled. For the fifth cyclotron harmonic, this method was tested in experiments with a low-frequency kilowatt power level gyrotron. The use of gyrotrons for plasma applications will significantly increase the power and frequency of radiation based on the observed effect. To suppress spurious oscillation at the main cyclotron resonance, which occurs in the region of optimal magnetic fields for the multiplication effect, it is proposed to use frequency locking of the gyrotron by an external signal. Simulations performed in this work based on an averaged self-consistent gyrotron model shows the possibility of oscillation in the described radiation scheme with a power of several watts at a frequency of 1.25 THz with radiation at the fifth harmonic of the gyrofrequency in a recently developed sub-MW/0.25 THz gyrotron with TE19, 8 operating mode.

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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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