光磁共振实验中干扰峰的辨别方法

Distinguishing methods of the interferential peak appearing in the optical pumping magnetic resonance experiment

简要介绍了光磁共振实验原理及采用扫场法测量铷原子朗德因子的实验方法.通过对磁共振原理的研究与分析,发现实验中正常磁共振信号的产生受到有关实验条件的限制,并且实验条件改变时会遵循一定的规律,而干扰信号则不具备这些特征.提出了辨别干扰峰的3种方法,即去射频场法、变频法和差值法,并对这3种方法的原理与应用作了介绍.

The principle of optical pumping magnetic resonance and the method using sweeping magnetic field to measure the Rubidium＇s Lande factor were presented concisely.The generation of normal magnetic resonance signals was confined by relational experimental conditions according to the principle of magnetic resonant.Moreover,these produced signals obeyed some regulations under varied experimental conditions while the interferential signal didn＇t have such characteristics.Three methods,such as removing the radio-frequency magnetic field,variable-frequency method and difference method,were proposed to distinguish the interferential peak.Finally,the principles and applications of these methods were introduced in detail.