波谱学杂志 ›› 1993, Vol. 10 ›› Issue (2): 123-130.

• 研究论文 • 上一篇    下一篇

异核偶极相互作用非久期项对交叉极化弛豫速率的影响

丁尚武, 傅日强, 叶朝辉   

  1. 中国科学院武汉物理研究所波谱与原子分子物理国家重点实验室, 武汉 430071
  • 收稿日期:1992-03-23 修回日期:1992-10-27 出版日期:1993-06-05 发布日期:2018-01-20
  • 基金资助:
    国家自然科学基金和中国科学院武汉物理研究所青年科学基金

EFFECTS OF NON-SECULAR TERMS IN HETERONUCLEAR DIPOLAR INTERACTION ON CROSS POLARIZATION RELAXATION RATE

Ding Shangwu, Fu Riqiang, Ye Chaohui   

  1. State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics, The Chinese Academy of Sciences, Wuhan 430071
  • Received:1992-03-23 Revised:1992-10-27 Online:1993-06-05 Published:2018-01-20

摘要: 本文通过计入异核偶极相互作用的非久期项对交叉极化弛豫速率的影响而推广交叉极化理论。自旋系统内部的快运动可以使得异核偶极相互作用的非久期项对交叉弛豫的贡献变得可观。本文给出了交叉弛豫速率的一般公式,并讨论了本理论在交叉极化实验中的应用。

关键词: 交叉极化, 非久期项, 自旋动力学

Abstract: The cross polarization theory is generalized by taking into consideration the contribution of non-secular part of heteronuclear dipolar interaction Hamiltonian in laboratory frame (NSH) to cross polarization relaxation. The rapid lattice fluctuation (~108Hz) of a spin system will enhance the effect of NSH. The general formula of cross polarization relaxation rate is given. The application of this theory to cross polarization experiments is analysed and discussed.

Key words: Cross polarization, Nonsecular terms, Thermodynamics of spin system, Spin dynamics