波谱学杂志 ›› 1990, Vol. 7 ›› Issue (4): 373-382.

• 研究论文 • 上一篇    下一篇

调制对磁共振谱的线宽、线形及幅值的影响

刘煜炎, 李奉延, 李津蕊, 何矿林, 龚本智, 陈扬骎   

  1. 中国科学院武汉物理研究所
  • 收稿日期:1989-09-20 修回日期:1990-02-09 出版日期:1990-12-05 发布日期:2018-01-23

EFFECTS OF MODULATION ON MAGNETIC RESONANCE LINES

Liu Yuyan, Li Fengyan, Li Jinrui, He Kuanglin, Gong Berzhi, Chen Yangqin   

  1. Wuhan Institute of Physics, Academia Sinica, Wuhan 430071
  • Received:1989-09-20 Revised:1990-02-09 Online:1990-12-05 Published:2018-01-23

摘要: 用付里叶分析方法从理论上分析计算了磁场调制对谱线(单一或重迭的)的线宽、线形及幅值的影响,并将理论计算结果与激光磁共振谱的调制效应的实验结果作了比较,两者符合得很好。据此作者提出了对于采用调制相检技术的磁共振谱技术普遍适用的选择调制参数的方法、步骤和原则。

关键词: 激光磁共振, 磁共振, 相敏检测, 调制效应

Abstract: An analysis is made by Fourier Expansion method for the phase sensitive detection of magnetic resonance at the first and the second harmonics of modulation frequency. The effects of modulation amplitude on magnetic resonance linewidths, lineshapes and the first and the second derivative (or harmonics) signal intensities of single and overlap lines are examined. The related experimental results of LMR spectra of NO2 agree with the calculation for Lorentzian and Gaussian lines. Suggestions for selecting the modulation parameters and searching for signal were proposed.

Key words: Laser magnetic resonance, Phase sensitive detection, Modulation sufects