Investigations on an improved transmission line for THz DNP-NMR spectroscopy

被引：1
|
作者：
Cao Yi-Chao [1 ]
Chen Qiang [1 ]
Zhang Chen [1 ]
Song Tao [1 ]
Huang Jie [1 ]
Hu Qiao [1 ]
Liu Di-Wei [1 ]
Wang Wei [1 ]
Hu Min [1 ]
Zhong Ren-Bin [1 ]
Shen Hao [1 ]
机构：
[1] Univ Elect Sci & Technol China, Sch Elect Sci & Engn, Chengdu 610054, Sichuan, Peoples R China
来源：
JOURNAL OF INFRARED AND MILLIMETER WAVES | 2019年 / 38卷 / 06期
关键词：
transmission line; phase-correcting mirror; nuclear magnetic resonance; dynamic nuclear polarization; DYNAMIC NUCLEAR-POLARIZATION; GHZ;
D O I：
10.11972/j.issn.1001-9014.2019.06.002
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The improved transmission and mirror system for a 263 GHz DNP-NMR spectrometer has been designed and numerically simulated based on the geometric optics theory and the vector diffraction theory. The system includes two corrugated waveguides , a parabolic mirror and an angle-adjustable phase-correcting mirror. The simulation results show that a well-focused Gaussian-like output wave-beam with 99.90% scalar Gaussian mode content. 99. 55% vector Gaussian mode content has been obtained. The direction of the output beam can be changed by only adjusting the angle of the phase-correcting mirror to match the DNP-NMR sample. The scalar Gaussian mode content is about 99. 57%, and the vector Gaussian mode content is about 98. 97% when the direction of the output beam changes in +/- 15 degrees.
引用
收藏
页码：690 / 694
页数：5
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