Investigations on an Improved Transmission Line for THz DNP-NMR Spectroscopy
Received:May 15, 2018  Revised:June 26, 2019  download
Citation:
Hits: 42
Download times: 0
Author NameAffiliationE-mail
Cao Yi-chao university of electronic science and technology of china 523647984@qq.com 
Chen Qiang University of Electronic Science and Technology of China  
Zhang Chen University of Electronic Science and Technology of China  
Song Tao University of Electronic Science and Technology of China  
Huang Jie University of Electronic Science and Technology of China  
Hu Qiao University of Electronic Science and Technology of China  
Liu Di-wei University of Electronic Science and Technology of China  
Wang Wei University of Electronic Science and Technology of China dawei@uestc.edu.cn 
Hu Min University of Electronic Science and Technology of China  
Zhong Renbin University of Electronic Science and Technology of China  
Shen Hao University of Electronic Science and Technology of China  
Abstract: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 beam with 96.43% scalar Gaussian mode content, 92.33% 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 96%, and the vector Gaussian mode content is about 92% when the direction of the output beam changes within ± 15o.
keywords:Transmission line, phase-correcting mirror, nuclear magnetic resonance, Dynamic nuclear polarization
  View/Add Comment  Download reader

Copyright:《Journal of Infrared And Millimeter Waves》