低场脉冲核磁共振仪探头的研制  

Design of the Probe for Low-field Pulsed NMR Instrument

作　　者：郑传行[1] 张一鸣[2] 

机构地区：[1]贵州财经学院信息学院,贵阳550004 [2]北京工业大学电子信息与控制工程学院,北京100022

出　　处：《核电子学与探测技术》2008年第2期233-237,共5页Nuclear Electronics & Detection Technology

基　　金：国家自然科学基金资助课题(No.50377043);北京市属市管高等学校人才强教计划资助项目

摘　　要：探头是低场脉冲核磁共振仪中最灵敏的重要部件。与其他类型的探头相比,采用螺线管线圈的探头能获得高Q(品质因素)值与良好的磁场均匀性。本文通过对螺线管探头电路的分析,推导出了设计制作此类探头的理论公式,并以此设计制作了高品质的探头,同时对于设计中高性能元器件的选型以及探头的调试方法给出了详细的说明。The probe is the most sensitive and important component in the low-field pulsed NMR instrument. Compared with other kinds of probes used in NMR instruments, the probe made with solenoid can get high Q（quality factor） value and uniform magnetic field. Based on the analysis of the probe＇s circuit, a theoretic formula is obtained, according to which, one high-quality probe is designed with solenoid. The selection of the high-quality components and the probe＇s testing method are also introduced in detail.

关 键 词：低场脉冲核磁共振 品质因数 均匀磁场 螺线管 

分 类 号：TH841[机械工程—仪器科学与技术]