脉冲核磁共振观测方法的改进  

Improvement of pulse NMR observation method

作　　者：王慧琴[1] 王明霞[1] 林琦[1] 范绪亮 赖盛英 WANG Hui-qin;WANG Ming-xia;LIN Qi;FAN Xu-liang;LAI Sheng-ying(Physics Experiment Center,Shanghai University of Engineering Science,Shanghai 201620,China)

机构地区：[1]上海工程技术大学基础物理实验中心,上海201620

出　　处：《物理实验》2022年第7期8-12,共5页Physics Experimentation

基　　金：国家重点研发项目(No.2018YFB1305305);南昌大学教改课题(No.NCUJGLX-17-20);上海工程技术大学大创项目(No.CX2121001)。

摘　　要：由于脉冲核磁共振实验对系统的环境温度极为敏感,磁体温漂和环境温度变化都会引起共振点的漂移.为了更准确地进行数据采集,改用存储示波器替代脉冲核磁共振系统配套软件进行实时跟踪观测,选择通用软件进行数据处理.此外,加入噪声因子对数据进行去噪处理,可以获得更准确的实验结果.The pulse nuclear magnetic resonance(NMR)experiment is very sensitive to the ambient temperature of the system.The drift of the magnet temperature and the change of the ambient temperature will cause the drift of the resonance point.In order to collect data more accurately,a storage oscilloscope was used for real-time data tracking and observation instead of the supporting software,and a general data processing software was used for data curve fitting.Futhermore,the noise factors were adopted for denoising processing to obtain more accurate experimental results.

关 键 词：脉冲核磁共振 弛豫时间 曲线拟合 噪声因子 

分 类 号：O482.532[理学—固体物理]