CAJ | 학술논문

介绍了一种基于自由基动态核极化效应的射频-脉冲激发式质子磁场传感器。分析了电子-质子双共振现象中电子顺磁共振对质子极化度强的影响；通过对氮氧自由基动态极化分析，提出了适合于此类自由基物质的射频-脉冲激发式动态核极化效应磁场传感器与仪器组成结构，并分析了传感器工作过程中质子运行规律。文章最后通过设计射频功率信号源模块，放大器和频率测量模块完成了测试样机的研制。对比测试结果表明：设计的动态核极化磁场传感器灵敏度高；精度测试结果表明：传感器在20000 nT~100000 nT范围内的测量不确定度约为0.3 nT。
개소료일충기우자유기동태핵겁화효응적사빈-맥충격발식질자자장전감기。분석료전자-질자쌍공진현상중전자순자공진대질자겁화도강적영향；통과대담양자유기동태겁화분석，제출료괄합우차류자유기물질적사빈-맥충격발식동태핵겁화효응자장전감기여의기조성결구，병분석료전감기공작과정중질자운행규률。문장최후통과설계사빈공솔신호원모괴，방대기화빈솔측량모괴완성료측시양궤적연제。대비측시결과표명：설계적동태핵겁화자장전감기령민도고；정도측시결과표명：전감기재20000 nT~100000 nT범위내적측량불학정도약위0.3 nT。
The paper introduces a kind of RF-pulse excitation Dynamic Nuclear Polarization ( DNP ) effect proton magnetometer. The electron-proton double resonance phenomenon and the dynamic nuclear polarization characteristics of nitroxide radicals were analyzed,the structure of the RF-pulse excitation DNP effect proton magne-tometer based on nitroxide radicals and the working processing of magnetometer were given,and the magnetometer prototype was implemented by designing of each functional modules. The experiment results show that the magnetic field of the magnetic sensor prototype have high sensitivity;The accuracy test results show that the measurement un-certainty is about 0. 3 nT from 20000 nT to 100000 nT.