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光磁共振实验方法的改进 总被引:1,自引:1,他引:0
一、前言光磁共振实验利用光抽运效应来研究原子超精细结构塞曼子能级间的磁共振跃迁现象,实验内容丰富,但实验原理较复杂,实验中会出现比较复杂的物理现象,是难度较大的一个实验。通常实验中使用双踪示波器同时观察扫场波形与光抽运信号或共振信号。据作者辅导实验的经验,首先学生在观察光抽运信号时就 相似文献
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光磁共振实验测量gF值方法的改进与拓展 总被引:10,自引:1,他引:9
分析了光磁共振实验测量gF值中传统方法存在的问题,提出了利用光抽运信号的变化来判断合磁场方向的改进措施,避免了实验过程中对合磁场的方向和大小的误判以及光抽运信号与共振信号的混杂.同时,拓展了原有的测量方法,丰富了实验内容. 相似文献
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We demonstrate experimentally an atomic magnetometer based on optical pumping theory, a magnetic resonance that is induced by a radio frequency field and dependent on the magnetic field strength. Compared with the conventional method using one radiation field, which is used not only as the probe beam but also as a pump beam, the additional re-pump beam can increase remarkably the amplitude of the signal. It is shown that the amplitude of the magnetic field resonance signal can increase more than 55% by using an additional re-pump beam, which makes the sensitivity of the magnetometer higher. Finally, we investigate the relation between amplitude of the signal and re-pump laser power, and calculate the atomic population in the trapping states with rate equations. 相似文献