Transmission Line for 258 GHz Gyrotron DNP Spectrometry

被引：11
|
作者：
Bogdashov, Alexandr A. [1 ]
Belousov, Vladimir I. [1 ]
Chirkov, Alexey V. [1 ]
Denisov, Gregory G. [1 ]
Korchagin, Vyacheslav V. [1 ]
Kornishin, Sergey Yu [1 ]
Tai, Evgeny M. [2 ]
机构：
[1] Inst Appl Phys, Nizhnii Novgorod, Russia
[2] GYCOM Ltd, Nizhnii Novgorod, Russia
来源：
JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES | 2011年 / 32卷 / 06期
关键词：
Microwave transmission line; HE11; mode; Dynamic nuclear polarization spectrometer; Sub-millimetre wavelength gyrotron; DYNAMIC NUCLEAR-POLARIZATION; MODE; NMR;
D O I：
10.1007/s10762-011-9787-4
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We describe the design and test results of the transmission line for liquid-state (LS) and solid-state (SS) DNP spectrometers with the second-harmonic 258.6 GHz gyrotron at the Institute of the Biophysical Chemistry Center of Goethe University (Frankfurt). The 13-meter line includes a mode converter, HE11 waveguides, 4 mitre bends, a variable polarizer-attenuator, directional couplers, a water-flow calorimeter and a mechanical switch. A microwave power of about 15 W was obtained in the pure HE11 mode at the spectrometer inputs.
引用
收藏
页码：823 / 837
页数：15
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