用数字示波器探究光磁共振实验中反常共振信号的机理EXPLORING THE MECHANISM OF ABNORMAL RESONANCE SIGNALS IN OPTICAL PUMPING MAGNETIC RESONANCE EXPERIMENT USING DIGITAL OSCILLOSCOPE
黄水平,钱小青
摘要(Abstract):
本文根据拟合得到的g_F因子大小,确定了光磁共振实验中的反常共振信号;用数字示波器测量了反常共振射频信号的频谱,计算了反常共振射频信号各高次谐波的大小;通过线性拟合,得到了正常共振信号幅度与射频信号幅度的关系。利用此关系,计算了各高次谐波产生的反常共振信号大小,计算结果与测量值基本一致。频率计连接射频信号源后,射频信号波形和频谱发生明显变化,反常共振信号随着射频信号频谱的变化发生相应改变,进一步证明了反常共振信号由射频信号的高次谐波共振所引起。这些结果表明,用数字示波器探究光磁共振实验中反常共振信号的机理不仅可行,还能定量估算和预测射频信号波形对反常共振信号大小的影响。
关键词(KeyWords): 光磁共振;反常共振信号;高次谐波;数字示波器
基金项目(Foundation): 浙江省高等学校课程思政示范课程建设项目(近物实验);; 宁波大学课程思政一流课程建设项目(近物实验);宁波大学教师教育专项研究项目(2022SFJY10)
作者(Author): 黄水平,钱小青
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