波谱学杂志 ›› 2000, Vol. 17 ›› Issue (6): 475-482.

• 研究论文 • 上一篇    下一篇

强偶合体系弛豫方程组的计算及J偶合对弛豫的影响

许峰1, 黄永仁2   

  1. 1. 淮南工业学院数理系, 淮南 232001;
    2. 华东师范大学分析测试中心, 上海 200062
  • 收稿日期:2000-08-25 修回日期:2000-10-08 出版日期:2000-12-05 发布日期:2018-01-11
  • 作者简介:许峰(1963-),男,硕士,副教授E-mail:fxu@h nit.edu.cn
  • 基金资助:
    安徽省教委自然科学基金;淮南工业学院青年基金项目

THE COMPUTATION OF THE RELAXATION EQUATIONS OF STRONG COUPLING SYSTEM AND THE EFFECT OF J COUPLING ON RELAXATION

XU Feng1, HUANG Yong-ren2   

  1. 1. Dept. of Math. and Phys., Huainan Institute of Technology, Huainan 232001;
    2. NMR Lab., East China Normal University, Shanghai 200062
  • Received:2000-08-25 Revised:2000-10-08 Online:2000-12-05 Published:2018-01-11

摘要: 根据WBR理论,采用"改进的矩阵计算方法",计算出了强偶合体系较为完整、准确的弛豫方程组,并根据此方程组分析研究了J偶合对横向弛豫、纵向弛豫和交叉弛豫的影响,获得了一些相应的结论。

关键词: 核磁共振, 弛豫, J偶合, Solomon方程

Abstract: According to the WBR theory and by means of the "Promoted matrix computation method", the authors computed and studied the relaxation equations of strong coupling system, especially the effect of J coupling on transverse relaxation, longitudinal relaxation and cross relaxation. Finally the authors gained the following valuable conclusions. (1) The effect of weak coupling on the computation of relaxation is very small and neglectable. (2) The strong coupling has hardly any effect on the computation of transverse relaxation. (3) The strong coupling has a certain extern effect on the computation of longitudinal relaxation and cross relaxation, especially this effect achieves maximum when the match condition ωab≈2πJ comes into existence and can't be neglected.

Key words: NMR, Relaxation, J coupling, Solomon equations

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