光泵磁共振中确定地磁水平分量方向的改进方法
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摘要
讨论了光泵磁共振实验中亥姆霍兹线圈产生的磁场方向与地磁场水平分量方向的一致程度对实验结果的影响,并分析了传统确定方向一致的方法的不足.通过调节光泵磁共振仪的摆放方向,观察共振信号的分开程度来确定仪器摆放方向与地磁场水平分量方向之间的夹角,当分开程度最小时,对应仪器方向与地磁场水平分量方向相互平行.
The influence of directions of the uniform magnetic field of Helmholtz coil and the horizontal component of the geomagnetic field on the experimental results in the optical pumping magnetic resonance experiment was discussed.The shortage of the traditional method to determine the direction was analyzed.The angle between the instrument and the horizontal component of the geomagnetic field was determined by observing the resonance signal while adjusting the direction of the instrument.The corresponding instrument direction and the direction of geomagnetic field horizontal component was parallel to each other when the separating degree was smallest.
The influence of directions of the uniform magnetic field of Helmholtz coil and the horizontal component of the geomagnetic field on the experimental results in the optical pumping magnetic resonance experiment was discussed.The shortage of the traditional method to determine the direction was analyzed.The angle between the instrument and the horizontal component of the geomagnetic field was determined by observing the resonance signal while adjusting the direction of the instrument.The corresponding instrument direction and the direction of geomagnetic field horizontal component was parallel to each other when the separating degree was smallest.
引文
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[2]严雯,王秋君,倪新蕾.光泵磁共振法测量地磁场水平分量BE∥[J].大学物理实验,2000,13(3):25-27.
[3]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.
[4]肖建华.光泵磁共振原理的图象阐释[J].四川师范大学学报(自然科学版),1996,19(5):107-111,114.
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[6]肖海霞,连晋平.光泵磁共振法测地磁场水平分量的方法[J].肇庆学院学报,2005,26(5):30-32.
[7]张玉霞,池水莲,高浩哲,等.光泵磁共振测量地磁场水平分量[J].实验室研究与探索,2016,35(8):10-13.
[8]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.
[9]池水莲,林斌,谢汇章.光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.
[10]郭怀明,王福合.光泵磁共振实验探讨[J].大学物理实验,2009,22(1):14-17.
[11]张清,陈一冰,王煜,等.光泵磁共振实验中小信号的讨论[J].物理实验,2000,20(10):48-49.
[12]米丽琴,原如领.对光磁共振实验中测量gF值的方法的评述和改进[J].物理实验,2003,23(3):47-48.
[13]王书运.光泵磁共振实验评述[J].实验技术与管理,2007,24(11):35-38.
[14]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.
[15]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.