通过关键问题逐步理解光泵磁共振实验的测量结果UNDERSTAND THE MEASUREMENT RESULTS OF OPTICAL PUMPING MAGNETIC RESONANCE EXPERIMENTS THROUGH KEY QUESTIONS
王钦生,马杰,冯璐,段俊熙
摘要(Abstract):
光泵磁共振实验利用光抽运效应研究原子超精细结构塞曼能级间的磁共振跃迁。这一实验可以加深学生对原子超精细结构、塞曼劈裂、光跃迁以及磁共振等物理现象的理解,是近代物理实验教学中重点内容之一。由于实验样品铷存在两种同位素、加在样品上的磁场有多个来源以及实验器材的局限性等因素,光泵磁共振实验也是近代物理实验教学中的一个难点。如何使学生在实验测量过程中,更好地理解实验原理,并真正懂得实验测量结果的意义,是光泵磁共振实验教学中的核心问题。本文将通过对实验中六个关键问题的逐步阐述,以及引入坐标这种图像化工具,搭建起实验物理原理与实验测量结果的桥梁,引导学生深入理解其中的物理过程。
关键词(KeyWords): 光泵磁共振;光抽运;磁共振;扫场法;扫频法
基金项目(Foundation): 国家自然科学基金(12074036)
作者(Author): 王钦生,马杰,冯璐,段俊熙
参考文献(References):
- [1] 吴思诚,荀坤.近代物理实验[M].北京:高等教育出版社,2015.WU S C,XUN K.Modern Physics Experiments[M].Beijing:Higher Education Press,2015.(in Chinese)
- [2] 周格,李伟,龚欣欣,等.光泵磁共振过程的理论和实验研究[J].大学物理,2013,32(11):55-58.ZHOU G,LI W,GONG X X,et al.Theoretical and experimental study of optically pumped magnetic resonance process[J].College Physics,2013,32(11):55-58.(in Chinese)
- [3] 彭军.光泵磁共振设计性实验思路和教学效果[J].大学物理实验,2010,23(1):22-25.PENG J.Design ideas and teaching effects of optically pumped magnetic resonance experiments[J].Physical Experiment of College,2010,23(1):22-25.(in Chinese)
- [4] 侯清润,王钧炎,王天时,等.光泵磁共振实验中测量地磁场水平分量的方法[J].物理与工程,2007,17(3):35-38.HOU Q R,WANG J Y,WANG T S,et al.Method for measuring the horizontal component of the Earth's magnetic field in optically pumped magnetic resonance experiments[J].Physics and Engineering,2007,17(3):35-38.(in Chinese)
- [5] 刘安平,韩忠,陈曦,等.利用光泵磁共振实验测量重庆地区地磁场[J].大学物理实验,2013,26(5):19-21.LIU A P,HAN Z,CHEN X,et al.Measuring the geomagnetic field in Chongqing using optically pumped magnetic resonance experiments[J].Physical Experiment of College,2013,26(5):19-21.(in Chinese)
- [6] 高子镡,池水莲,王彩强,等.光泵磁共振中确定地磁水平分量方向的改进方法[J].物理实验,2018,38(3):11-14.GAO Z H,CHI S L,WANG C Q,et al.Improved method for determining the direction of the horizontal component of the geomagnetic field in optically pumped magnetic resonance[J].Physics Experimentation,2018,38(3):11-14.(in Chinese)
- [7] 仲明礼,张越,夏顺保,等.关于光泵磁共振实验中三角波扫场信号的讨论[J].物理实验,2003,23(6):37-39.ZHONG M L,ZHANG Y,XIA S B,et al.Discussion on the triangular wave sweeping signal in optically pumped magnetic resonance experiment[J].Physics Experimentation,2003,23(6):37-39.(in Chinese)
- [8] 张飞雁,黄水平,裴积全.光磁共振实验反常共振信号的判断与原因分析[J].宁波大学学报(理工版),2010,23(2):71-73.ZHANG F Y,HUANG S P,PEI J Q.Judgment and cause analysis of abnormal resonance signals in optical magnetic resonance experiments[J].Journal of Ningbo University (Science and Engineering Edition),2010,23(2):71-73.(in Chinese)
- [9] 黄水平,张飞雁.光泵磁共振实验测量g_F值方法的改进与拓展[J].物理实验,2004,24(1):35-37.HUANG S P,ZHANG F Y.Improvement and extension of the method for measuring g_F value in optical pumping magnetic resonance experiment[J].Physics Experimentation,2004,24(1):35-37.(in Chinese)
- [10] 刘海霞,亓夫军,徐铭.光泵磁共振实验中扫场的作用和影响[J].大学物理,2005,24(12):40-43.LIU H X,QI F J,XU M.The role and influence of scanning field in optically pumped magnetic resonance experiments[J].College Physics,2005,24(12):40-43.(in Chinese)
- [11] 王书运,钟世德,马登良.光泵磁共振实验中水平磁场及扫场水平分量的测定[J].山东师范大学学报(自然科学版),2008,23(1):58-59,63.WANG S Y,ZHONG S D,MA D L.Determination of horizontal magnetic field and horizontal component of scanning field in optically pumped magnetic resonance experiment[J].Journal of Shandong Normal University (Natural Science Edition),2008,23(1):58-59,63.(in Chinese)
- [12] 王书运.光泵磁共振实验中g_F因子的测量[J].实验技术与管理,2008,25(11):48-52.WANG S Y.Measurement of g_F factor in optical pumping magnetic resonance experiment[J].Experimental Technology and Management,2008,25(11):48-52.(in Chinese)
- [13] 仲明礼.光泵磁共振实验中关键问题的分析与对策[J].潍坊学院学报,2009,9(2):78-80.ZHONG M L.Analysis and countermeasures of key issues in optical pumping magnetic resonance experiments[J].Journal of Weifang University,2009,9(2):78-80.(in Chinese)
- [14] 周健,俞熹,王煜.光泵磁共振实验中异常光抽运信号的深入探讨[J].物理实验,2009,29(4):1-5,10.ZHOU J,YU X,WANG Y.In-depth study of anomalous optical pumping signals in optically pumped magnetic resonance experiments[J].Physics Experimentation,2009,29(4):1-5,10.(in Chinese)
- [15] 张飞雁.光泵磁共振实验中扫场和水平场关系的探究[J].大学物理实验,2009,22(4):9-12.ZHANG F Y.Research on the relationship between scanning field and horizontal field in optically pumped magnetic resonance experiment[J].Physical Experiment of College,2009,22(4):9-12.(in Chinese)
- [16] 冯正南,宋文福.光泵磁共振实验问题探讨[J].大学物理实验,2010,23(3):36-38.FENG Z N,SONG W F.Discussion on experimental problems of optically pumped magnetic resonance[J].Physical Experiment of College,2010,23(3):36-38.(in Chinese)
- [17] 曾昭明,陈宜保,袁科亮,等.光泵磁共振实验中光抽运信号波形成因的探究[J].物理与工程,2011,21(3):62-64.ZENG Z M,CHEN Y B,YUAN K L,et al.Study on the formation of optical pumping signal wave in optically pumped magnetic resonance experiment[J].Physics and Engineering,2011,21(3):62-64.(in Chinese)
- [18] 池水莲,林斌,谢汇章.光泵磁共振实验中扫场及水平场取值关系的探讨[J].大学物理,2012,31(8):29-31.CHI S L,LIN B,XIE H Z.Discussion on the relationship between the sweep field and the horizontal field in the optically pumped magnetic resonance experiment[J].College Physics,2012,31(8):29-31.(in Chinese)
- [19] 高浩哲,池水莲,陈昕,等.光泵磁共振实验中扫场信号研究和测量[J].实验技术与管理,2017,34(2):66-69.GAO H Z,CHI S L,CHEN X,et al.Research and measurement of scanning field signal in optically pumped magnetic resonance experiment[J].Experimental Technology and Management,2017,34(2):66-69.(in Chinese)
- [20] 段俊熙,冯璐.光泵磁共振实验中实验参数选取的探讨[J].物理与工程,2022,32(1):136-142.DUAN J X,FENG L.Discussion on the selection of experimental parameters in optically pumped magnetic resonance experiments[J].Physics and Engineering,2022,32(1):136-142.