磁共振实验温度漂移对磁场及测量的影响  

Influence of temperature drift on the magnetic field and its measurement in magnetic resonance

作　　者：李潮锐[1] 

机构地区：[1]中山大学物理学院,广东广州510275

出　　处：《物理实验》2017年第2期24-27,32,共5页Physics Experimentation

基　　金：国家自然科学基金项目(No.J1210034;No.J1103211)

摘　　要：近代物理实验除了明确的物理教学内容,还涉及到多方面的实验测量技术原理.实验教学中引导学生了解测量传感技术原理,掌握实验设计构思,有助于学生更好地理解实验的物理内容,也是对基础物理实验知识的综合运用.尽管磁共振吸收与霍尔效应在物理原理上不存在明显关联,但基于对磁场温度漂移准确测量分析需要,使充分理解霍尔效应成为掌握磁共振准确测量的必要技术环节.尽管教学实验测量数据仅满足于半定量分析,但简单实验观测结果足以帮助学生领会认真完成实验的关键步骤.多年实验教学经验表明,教师与学生的教学互动,或者学生的集体讨论分析,都是物理实验课堂教学的重要环节.Modern physics experiment involved not only the physics principle but also the modern measurement technology.It was helpful for the students to well understand the experimental content to begin the modern physics experiment on sensing technology and master the detailed design of the measurement system in the teaching.It was of advantage to improve the comprehensive application of the experimental skill.It was known that the magnetic resonance and Hall effect was of difference in physics principle,but the accurate measurement of magnetic field in magnetic resonance was intimately connected with the fully understanding of the Hall effect.Although the data from the teaching experiment only fulfilled the needs of the semi-quantitative analysis,the inaccurate results to some extent could help students comprehend the key steps in performing the experiment.The teaching experience showed that the interaction between teachers and students,or students＇ collective discussion,played an important role in physics experiment teaching.

关 键 词：电子自旋共振 核磁共振 霍尔效应 传感技术 教学方法 

分 类 号：O482.532[理学—固体物理]