波谱学杂志 ›› 1997, Vol. 14 ›› Issue (4): 287-290.

• 研究论文 • 上一篇    下一篇

固态样品中扩散的核磁共振测量

孟庆安, 李子荣   

  1. 中国科学院物理研究所磁学国家重点实验室, 北京 100080
  • 收稿日期:1997-03-25 出版日期:1997-08-05 发布日期:2018-01-22
  • 作者简介:孟庆安,男,56岁,研究员
  • 基金资助:
    国家自然科学基金资助项目

A PFG NMR EXPERIMENT FOR DIFFUSION IN SOLID SAMPLES IN THE PRESENCE OF EDDY CURRENTS

Meng Qingan, Li Zirong   

  1. State Key Laboratory for Magnetism, Institute of Physics, The Chinese Academy for Sciences, Beijing 100080
  • Received:1997-03-25 Online:1997-08-05 Published:2018-01-22

摘要: 用脉冲梯度切核磁共振测量固态样品中的扩散遇到很多困难,对于一个不用内锁的电磁体系统,观测到脉冲场梯度过后涡流造成样品处的磁场强度的强烈振荡.提出了一个用该系统测量凝胶聚合物中锂离子扩散可获得较好结果的脉冲序列.

关键词: 脉冲梯度磁场, 扩散, 核磁共振

Abstract: The application of pulsed field gradient NMR to the measurement of diffusion in solid samples met several difficulties. A strong magnetic field oscillation at the sample probe was observed in an electromagnetic NMR spectrometer with an external lock umt. A pulse sequence is proposed to be useful in the diffesion measurement in polymer gel samples.

Key words: Pulsed filed gradient, Diffusion, NMR