光泵磁共振测量地磁场水平分量
|
摘要
探讨了光泵磁共振实验中用换向法测量地磁场水平分量时,共振信号参考点的选取对实验结果的影响。首先进行理论分析,分别用换向抵消法的扫场法和扫频法对不同的信号参考点进行公式推导,得到地磁场的水平分量;接着进行实验测量,计算出地磁场的水平分量。通过对扫场三角波信号直流分量和交流分量的分析,并利用抽运信号判断当示波器显示三角波的参考点与实际扫场信号的参考点相反时扫场与地磁场水平分量的方向关系,阐述了在实验测量中如何正确选择共振信号对应的参考点。从而提高了测量结果的准确度。
The article discussed how to choose the reference point of resonance signal which affects the results during the experiment of measuring the horizontal component of the geomagnetic field by the method of optical pump magnetic resonance. Firstly,the paper theoretically analyzed the different signal reference point by reversing field sweep method and sweeping frequency method,respectively. The formula of the horizontal component of the geomagnetic field was found; then,based on experiments and the formula,the horizontal component of the geomagnetic field was measured and calculated. By the means of analyzing the DC and AC signals of the scanning field's triangular wave,the article used the pumping signal to determinate the oriented relationship between scanning field and the horizontal component of geomagnetic field when the reference point of triangular wave printed on oscilloscope and the reference point of the actual scanning field had the opposite direction. The article elaborated on how to choose the appropriate resonance signal 's reference point during the experiment. The article improved the accuracy of the measurement and deepened the understanding of optical pump magnetic resonance.
The article discussed how to choose the reference point of resonance signal which affects the results during the experiment of measuring the horizontal component of the geomagnetic field by the method of optical pump magnetic resonance. Firstly,the paper theoretically analyzed the different signal reference point by reversing field sweep method and sweeping frequency method,respectively. The formula of the horizontal component of the geomagnetic field was found; then,based on experiments and the formula,the horizontal component of the geomagnetic field was measured and calculated. By the means of analyzing the DC and AC signals of the scanning field's triangular wave,the article used the pumping signal to determinate the oriented relationship between scanning field and the horizontal component of geomagnetic field when the reference point of triangular wave printed on oscilloscope and the reference point of the actual scanning field had the opposite direction. The article elaborated on how to choose the appropriate resonance signal 's reference point during the experiment. The article improved the accuracy of the measurement and deepened the understanding of optical pump magnetic resonance.
引文
[1]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.
[2]张杨,吴纪元.基于铯原子光泵磁共振的磁场传感实验系统设计[J].大学物理实验,2011,24(3):13-15.
[3]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.
[4]王林茂,羊现长.利用光泵磁共振测定地磁感应强度的实验探讨[J].海南师范学院学报(自然科学版),2003,16(4):33-36.
[5]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.
[6]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.
[7]张玉,方立铭.利用光泵磁共振测芜湖地区的地磁场[J].邵阳学院学报(自然科学版),2012,9(4):19-24.
[8]张圆圆,严雯.光磁共振测量地磁场水平分量方法评述与改进[J].物理实验,2010,30(10):43-46.
[9]王祖铨,吴思诚.近代物理实验[M].北京:北京大学出版社,1995.
[10]池水莲,秦晓琼,於黄忠.光磁共振实验中抵消地磁场垂直分量的方法[J].物理实验,2012,32(5):34-36.
[11]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.
[12]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.
[13]钱庆凯,陈宜保,张晓平.光抽运信号的理论分析[J].物理实验,2011,31(11):40-42,46.
[14]冯饶慧.一种快速判断光泵磁共振实验中扫场和水平磁场方向的方法[J].实验室研究与探索,2014,33(8):66-68,83.
[2]张杨,吴纪元.基于铯原子光泵磁共振的磁场传感实验系统设计[J].大学物理实验,2011,24(3):13-15.
[3]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.
[4]王林茂,羊现长.利用光泵磁共振测定地磁感应强度的实验探讨[J].海南师范学院学报(自然科学版),2003,16(4):33-36.
[5]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.
[6]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.
[7]张玉,方立铭.利用光泵磁共振测芜湖地区的地磁场[J].邵阳学院学报(自然科学版),2012,9(4):19-24.
[8]张圆圆,严雯.光磁共振测量地磁场水平分量方法评述与改进[J].物理实验,2010,30(10):43-46.
[9]王祖铨,吴思诚.近代物理实验[M].北京:北京大学出版社,1995.
[10]池水莲,秦晓琼,於黄忠.光磁共振实验中抵消地磁场垂直分量的方法[J].物理实验,2012,32(5):34-36.
[11]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.
[12]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.
[13]钱庆凯,陈宜保,张晓平.光抽运信号的理论分析[J].物理实验,2011,31(11):40-42,46.
[14]冯饶慧.一种快速判断光泵磁共振实验中扫场和水平磁场方向的方法[J].实验室研究与探索,2014,33(8):66-68,83.