电子束持续等离子体作为放大亚太赫兹频段电磁辐射的介质

A. Bogatskaya, A. Popov
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引用次数: 0

摘要

证明了高能电子束在气体(气体混合物)中产生的低温弱电离非平衡等离子体具有输运截面上的拉姆绍尔最小值和慢电子的有效附着,可以作为放大和产生亚太赫兹频段电磁辐射的介质。对Xe - F2混合物的电子能量分布函数进行了分析。发现在这种混合物中存在随EEDF增长的能量间隔。这一区间提供了连续谱中电子能谱的居群反转的存在,并导致了微波辐射增益因子的正值。分析了增益因子与放大后的辐射频率和等离子体参数的关系。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Electron beam sustained plasma as a medium for amplification of electromagnetic radiation in subterahertz frequency band
It is demonstrated that low-temperature weakly-ionized nonequilibrium plasma created by a high-energy electron beam in gases (gas mixtures) with Ramsauer minimum in a transport cross section and effective attachment of slow electrons can be used as a medium for amplification and generation of electromagnetic radiation in subterahertz frequency band. Analysis of the electron energy distribution function (EEDF) in Xe — F2 mixture is performed. Energy interval with growing EEDF is found to exist in such a mixture. Such an interval provides the existence of population inversion of the electron spectrum in continuum and is responsible for positive value of a gain factor of microwave radiation. A gain factor depending on an amplified radiation frequency and plasma parameters is analysed.
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