自旋3/2粉末样品四极核中心跃迁的NMR回波序列

波谱学杂志 ›› 1989, Vol. 6 ›› Issue (4): 431-438.

自旋3/2粉末样品四极核中心跃迁的NMR回波序列

李鲠颖, 邬学文

华东师范大学物理系, 上海

收稿日期:1988-09-02 修回日期:1988-11-14 出版日期:1989-12-05 发布日期:2018-01-22

NMR ECHO SEQUENCE IN THE CENTRAL TRANSITION OF SPIN-3/2 QUADRUPOLAR SYSTEMS IN POWDERED SAMPLES

Li Gengying, Wu Xuewen

Department of Physics, East China Normal University

Received:1988-09-02 Revised:1988-11-14 Online:1989-12-05 Published:2018-01-22

摘要/Abstract

摘要： 本文提出脉冲序列45_X^°-t₁-90_±Y^°-t₂,从理论和实验上证实了它能够有效地会聚粉末样品中I=3/2四极核中心跃迁的磁化矢量,并对该回波序列的激发谱宽作了数值计算.

关键词: 粉末样品, 回波序列, 中心跃迁

Abstract: A pulse sequence 45_x^°-t₁-90_±y^°-t₂ is proposed for the spin echo of I=3/2 spin systems in powder samples, which is confirmed theoretically and experimentally. It can effectively refocuse the magnetization of the central transition in spin-3/2 quadrupole nuclear systems. And the numerical calculated excitation bandwidth of the echo sequence is also given.

Key words: Powder sample, Echo sequence, Central transition

李鲠颖, 邬学文. 自旋3/2粉末样品四极核中心跃迁的NMR回波序列[J]. 波谱学杂志, 1989, 6(4): 431-438.

Li Gengying, Wu Xuewen. NMR ECHO SEQUENCE IN THE CENTRAL TRANSITION OF SPIN-3/2 QUADRUPOLAR SYSTEMS IN POWDERED SAMPLES[J]. Chinese Journal of Magnetic Resonance, 1989, 6(4): 431-438.

[1]	李鲠颖, 邬学文. 粉末样品中氘核NMR的回波序列[J]. 波谱学杂志, 1991, 8(3): 333-340.
[2]	李鲠颖, 邬学文. 粉末样品中自旋3/2核体系中心跃迁的布居数反转[J]. 波谱学杂志, 1990, 7(1): 17-24.
[3]	章宪权, 吴肖令, 邬学文. 玻璃和晶体粉末样品的核磁共振谱的计算机拟合[J]. 波谱学杂志, 1988, 5(2): 129-140.