基于263 GHz回旋管的动态核极化核磁共振研究  

Research on Dynamic Nuclear Polarization NMR Based on 263 GHz Terahertz Cyclotrons

作　　者：张朝阳[1,2] 王维[1,2] 王爱钦 张澳歌 宋韬[1,2] 郝伊宁 姚纳 焦蛟 张开春[1,2] 刘頔威[1,2] ZHANG Chao-yang;WANG-Wei;WANG Ai-qin;ZHANG Ao-ge;SONG-Tao;HAO Yi-ning;YAO-Na;JIAO-Jiao;ZHANG Kai-chun;LIU Di-wei(Terahertz Research Center,School of Electronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu 610054,China;Key Laboratory of Terahertz Technology,Ministry of Education,Chengdu 610054,China;School of Aeronautics&Astronautics,University of Electronic Science and Technology of China,Chengdu 610054,China)

机构地区：[1]电子科技大学电子科学与工程学院太赫兹研究中心,四川成都610054 [2]电子科技大学太赫兹技术教育部重点实验室,四川成都610054 [3]电子科技大学航空航天学院,四川成都610054

出　　处：《真空电子技术》2024年第3期33-36,共4页Vacuum Electronics

基　　金：国家自然科学基金(62371092,61988102,61921002,62101106);四川省自然科学基金(2024NSFSC0465);中央高校基本科研业务费专项资金资助(ZYGX2020ZB008和ZYGX2021J011);四川省博士后科学专项基金(TB2022039)。

摘　　要：核磁共振技术(Nuclear Magnetic Resonance,NMR)是一项具有选择性和非入侵性的化学结构分析手段。而由太赫兹波驱动的动态核极化增强核磁共振技术(Dynamic Nuclear Polarization-Nuclear Magnetic Resonance,DNP-NMR)能够大幅提高核磁共振波谱信号灵敏度并能够数量级缩短检测时间,在材料、化学和生物等众多领域显示出广阔的应用前景。该论文主要介绍了基于自主研制的驱动源太赫兹回旋管和太赫兹传输线搭建的动态核极化增强核磁共振系统,实验测试过程及结果,结果表明在该系统下通过263 GHz辐射源的驱动下,核磁共振信号实现353倍增强,所获得的实验结果已接近国际领先水平。我国在该领域的相关实验研究还处于起步阶段,该论文的研究内容对国内进行基于太赫兹波驱动的动态核极化增强核磁实验及系统设备国产化具有一定的指导意义。Nuclear magnetic resonance(NMR)is a selective and non-invasive method for chemical structure analysis.The dynamic nuclear polarization-nuclear magnetic resonance(DNP-NMR)technology driven by terahertz waves can greatly improve the sensitivity of NMR spectrum signals and reduce the detection time by orders of magnitude,which shows broad application prospects in many fields such as materials,chemistry,and biology.A DNP-NMR system based on self-developed terahertz gyrotron driving source and terahertz transmission line is introduced.The experimental testing process and results show that under the driving of a 263GHz radiation source,the NMR signal is enhanced by 353 times,and the experimental results obtained are close to the international leading level.The relevant experimental research in this field is still in initial stage in China.The research has certain guiding significance for the domestic experiment of DNP-NMR driven by terahertz wave and the localization of system equipment.

关 键 词：动态核极化 核磁共振 信号强度 

分 类 号：TN12[电子电信—物理电子学]