| 光磁共振测量地磁场的改进方法 |
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| 引用本文： | 邸淑红,宋庆功.光磁共振测量地磁场的改进方法[J].中国民航学院学报,2002,20(4):20-22. |
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| 作者姓名： | 邸淑红 宋庆功 |
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| 作者单位： | 唐山师范学院物理系 唐山063000
(邸淑红)，中国民航学院理学院 天津300300(宋庆功) |
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| 摘 要： | 根据光磁共振原理,通过光抽运,形成原子的能级分布偏极化,再加入射频信号打破塞曼能级偏极化分布,形成并输出光磁共振信号。然后,同时改变扫场和水平磁场方向,调节水平电流大小,再次获得光磁共振信号。根据2次测得的水平亥姆霍兹线圈电流,计算等效磁感强度。由仪器的垂直电流,计算地磁场垂直分量。二者合成,即可得出当地磁感强度。改进后,此方法克服了以往先测定朗德因子再测定地磁场的缺点。
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| 关 键 词： | 光磁共振 共振电流 地磁场水平分量 |
| 文章编号： | 1001-5000(2002)04-0020-03 |
| 修稿时间： | 2002年5月14日 |
Improved Method of Using Optical Magnetic Resonance to Measure Terrestrial Magnetic Field |
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| Shu-hong ,SONG Qing-gong.Improved Method of Using Optical Magnetic Resonance to Measure Terrestrial Magnetic Field[J].Journal of Civil Aviation University of China,2002,20(4):20-22. |
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| Authors: | Shu-hong SONG Qing-gong |
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| Institution: | Shu-hong 1,SONG Qing-gong 2 |
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| Abstract: | According to the principle of optical-magnetic resonance,polarized distribution of atoms at Zeeman 's energy levels is formed by optical-pumping with the corresponding in stru-ment.Some optical-magnetic resonance signals are formed and displayed by adding radio fre-quency-signal to break the polarized distribution.Then change the directions of sweeping field and horizontal magnetic field,the resonance signals can be obtained again by adjusting the horizontal current.The equivalent magnetic induction can be calculated with the two cur rents in Helmholtz ' coil.The vertical component of terrestrial magnetic field can be got with the vertical current.At last,the native magnetic induction is determined by composing the two components.This method overcomes the weak point of the previous method in which one must measure the Lande factor before dealing with the magnetic field. |
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| Keywords: | optical-magnetic resonance resonance current terrestrial magnetic field |
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