Pulsed Power and Spectrum Composition of the Terahertz Radiation Flux Escaping from a Plasma Column Due to Propagation Through it of a Relativistic Electron Beam with Various Current Densities (GOL–PET Facility Experiments)

IF 0.8 4区 地球科学 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC
D. A. Samtsov, A. V. Arzhannikov, S. L. Sinitsky, P. V. Kalinin, S. S. Popov, E. S. Sandalov, M. G. Atlukhanov, K. N. Kuklin, M. A. Makarov, V. D. Stepanov, A. F. Rovenskikh
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引用次数: 0

Abstract

One of the possible applications of high-current relativistic electron beams (REBs) is to generate electromagnetic waves at plasma frequencies due to the propagation of a beam through a magnetized plasma column. Research work in this direction, aimed at creating terahertz radiation sources at the BINP, is underway using the GOL–PET facility. We study the relaxation of a REB beam with a current density of (1–2) kA/cm2 in a magnetized plasma column with a density of 5 · 1014 cm–3. The purpose of these studies is to create a pulse radiation source with a power of tens of megawatts in the frequency range 0.1–1 THz. To date, a radiation flux with a power level of 10 MW and a maximum power spectral density in the frequency range 150–200 GHz has been achieved in the experiments. Further progress in these studies was related to the experimental establishment of the dependence of the power and spectral composition of the radiation flux on the parameters of the injected beam, in particular, its current density. The current density of the injected beam was varied due to the different compression of the beam cross section by the magnetic field. The results of measuring the characteristics of the radiation flux are presented in correlation with the results of measurements of the beam current density and plasma density.

不同电流密度的相对论电子束通过等离子体柱传播时等离子体柱逸出的太赫兹辐射通量的脉冲功率和频谱组成(GOL-PET 设备实验)
大电流相对论电子束(REB)的可能应用之一是通过磁化等离子体柱中的电子束传播产生等离子体频率的电磁波。目前正在利用GOL-PET设施开展这方面的研究工作,目的是在BINP制造太赫兹辐射源。我们研究了电流密度为 (1-2) kA/cm2 的 REB 光束在密度为 5 - 1014 cm-3 的磁化等离子体柱中的弛豫情况。这些研究的目的是在 0.1-1 太赫兹频率范围内创建一个功率为数十兆瓦的脉冲辐射源。迄今为止,已经在实验中实现了 10 兆瓦功率的辐射通量和 150-200 千兆赫频率范围内的最大功率谱密度。这些研究的进一步进展是通过实验确定了辐射通量的功率和频谱组成与注入光束参数,特别是其电流密度的关系。由于磁场对光束横截面的压缩不同,注入光束的电流密度也不同。辐射通量特性的测量结果与束流密度和等离子体密度的测量结果相关联。
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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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