应用于动态核极化核磁共振系统的改进型传输线研究
投稿时间:2018-05-15  修订日期:2019-09-12  点此下载全文
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Cao Yichao Investigations on an Improved Transmission Line for THz DNP-NMR Spectroscopy 
Chen Qiang Investigations on an Improved Transmission Line for THz DNP-NMR Spectroscopy 
Zhang Chen Investigations on an Improved Transmission Line for THz DNP-NMR Spectroscopy 
Song Tao Investigations on an Improved Transmission Line for THz DNP-NMR Spectroscopy 
Huang Jie Investigations on an Improved Transmission Line for THz DNP-NMR Spectroscopy 
Hu Qiao Investigations on an Improved Transmission Line for THz DNP-NMR Spectroscopy 
Liu Diwei Investigations on an Improved Transmission Line for THz DNP-NMR Spectroscopy 
Wang Wei 电子科技大学 
Hu Min Investigations on an Improved Transmission Line for THz DNP-NMR Spectroscopy 
Zhong Renbin Investigations on an Improved Transmission Line for THz DNP-NMR Spectroscopy 
Shen Hao Investigations on an Improved Transmission Line for THz DNP-NMR Spectroscopy 
基金项目:国家重点研发计划;中央高校基本科研业务费;
中文摘要:基于几何光学理论和矢量衍射理论,设计了263GHz DNP-NMR谱仪的改进反射镜系统,并进行了数值模拟。该系统包括两个波纹波导、一个抛物面镜和一个角度可调的相位校正镜。仿真结果表明,获得了聚焦良好的类高斯输出光束,其标量高斯模含量为99.90%,矢量高斯模含量为99.55%。只有通过调整相位校正镜的角度来匹配DNP-NMR样品,才能改变输出光束的方向。当输出光束方向在±15o变化时,标量高斯模含量约为99.57%,矢量高斯模含量约为98.97%。
中文关键词:传输线  相位矫正镜  核磁共振  动态核极化
 
Investigations on an Improved Transmission Line for THz DNP-NMR Spectroscopy
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 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 ± 15o.
keywords:Transmission line  phase-correcting mirror  nuclear magnetic resonance  Dynamic nuclear polarization
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