微波电子自旋共振的微分测量  

Differential measurement of microwave electron spin resonance

作　　者：李潮锐[1] LI Chao-rui(School of Physics, Sun Yat-sen University, Guangzhou 510275, China)

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3期21-24,共4页Physics Experimentation

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

摘　　要：实验教学仪器性能优化更有利于教与学的课堂交流,但缺乏日常教研讨论可能导致物理实验教学变为实验技能教学.特别对于近代物理实验教学,掌握实验原理有助于理解科研专业设备的工作原理.可以认为,理解基于调制场作用的锁相技术是掌握电子自旋共振吸收微分测量的关键.为此,教学实施中通过实验技术分解,提高物理实验教学的可操作性.在利用原有教学装置主体器件的基础上,采用通用仪器组建微分测量实验.教学实践表明:微分测量实验既帮助学生更好地理解电子自旋共振谱分析的实验原理,又展示了近代物理实验教学的灵活性及其连接物理实验研究的桥梁作用.The optimization of experimental instrument was more conducive to the interaction be- tween teacher and students in teaching process, but the insufficiency of regular discussion in the teaching group might lead the experimental physics teaching to experimental skill training. Especially for modern physics experiment, apprehending the principle of experiment was helpful for students to comprehend the working principle of scientific research equipment. It was believed that the under- standing of the phase-locked technique based on modulation field was the key to mastering the differ ential measurement of electron spin resonance. To this end, the implementations of teaching through the decomposition of experimental techniques improved the teaching operability. Using the main com- ponents of the original equipment, the differential measurement experiment was built up with some other general purpose instruments. The teaching practice showed that it not only helped students to comprehend the principle of electron spin resonance spectrum, but also demonstrated the teaching flexibility and the bridge role of modern physics experiment.

关 键 词：电子自旋共振 锁相技术 微分测量 频响特性 

分 类 号：O4-33[理学—物理] O562