哈尔科夫微波光谱仪的现代化:现状

Q4 Physics and Astronomy
E. Alekseev, V. Ilyushin, V. Budnikov, M. Pogrebnyak, L. Kniazkov
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引用次数: 0

摘要

主题和目的。介绍了哈尔科夫微波光谱仪最近进行的重大改进的结果。升级的目的是扩大工作频率范围,提高光谱仪的最大可访问光谱分辨率。方法和方法论。为了扩大频率范围,我们设计并构建了新的基于bwo的振荡器单元,也为三倍频应用提供了可能性。一个新的吸收池的建设扩大了直径,使我们能够大大提高光谱分辨率的兰姆倾角测量。结果。由于升级,光谱仪已能够覆盖34至420千兆赫的频率范围,183至200千兆赫的差距。兰姆倾角观测模式的光谱分辨率提高了两倍。此外,光谱仪的功能已通过其几个子系统的现代化得到显著改善。结论。光谱仪系统的新升级允许扩展工作频率范围,并通过减少Lamb-dip测量中的飞行时间线展宽来增加最大可达分辨率。此外,应用具有精确已知调制参数的方波频率调制,结合对吸收单元中反射引起的畸变的仔细建模,使我们能够显着提高线频测量的精度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
MODERNIZATION OF THE KHARKIV MICROWAVE SPECTROMETER: CURRENT STATE
Subject and Purpose. Results are presented of the recent considerable upgrade implemented at the Kharkiv microwave spectrometer. The upgrade has been aimed at extending the operating frequency range and increasing the utmost accessible spectral resolution of the spectrometer. Methods and Methodology. In order to extend the frequency range we have designed and constructed new BWO-based oscillator units, also providing for possibility of frequency tripler application. Construction of a new absorbing cell of enlarged diameter allowed us to considerably improve the spectral resolution for Lamb-dip measurements. Results. Owing to the upgrade, the spectrometer has become able to cover the frequency range from 34 to 420 GHz, with a gap from 183 to 200 GHz. The spectral resolution in the Lamb-dip observation mode has been increased by a factor of two. In addition, the functionality of the spectrometer has been significantly improved via modernization of several of its subsystems. Conclusions. The new upgrades of the spectrometer systems have permitted extending the operational frequency range and increasing the utmost accessible resolution by means of reducing the time-of-flight line broadening in the Lamb-dip measurements. In addition, application of square-wave frequency modulation with accurately known modulation parameters, in combination with careful modeling of the distortions caused by reflections in the absorbing cell, has allowed us to significantly improve the accuracy of line frequency measurements.
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来源期刊
Radio Physics and Radio Astronomy
Radio Physics and Radio Astronomy Physics and Astronomy-Physics and Astronomy (miscellaneous)
CiteScore
0.60
自引率
0.00%
发文量
18
审稿时长
8 weeks
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