半整数四极体系中心跃迁的多次激发NMR谱

波谱学杂志 ›› 1992, Vol. 9 ›› Issue (3): 283-288.

半整数四极体系中心跃迁的多次激发NMR谱

李鲠颖, 邬学文

华东师范大学分析测试中心, 上海 200062

收稿日期:1991-09-25 修回日期:1992-01-03 出版日期:1992-09-05 发布日期:2018-01-20
基金资助:
This work is financially supported by the National Natural Science Foundation of China

MULTIPLE EXCITATION IN THE CENTRAL TRANSITION OF HALF-INTEGER QUADRU-POLAR NUCLEI IN SOLIDS

Li Gengying, Wu Xuewen

NMR Laboratory, Analytical Center, East China Normal University, Shanghai 200062

Received:1991-09-25 Revised:1992-01-03 Online:1992-09-05 Published:2018-01-20
Supported by:
This work is financially supported by the National Natural Science Foundation of China

摘要/Abstract

摘要： 本文对半整数四极体系中心跃迁的多次激发NMR进行了研究,结果表明该方法能够较大地提高接收信号的强度.另外对多次激发脉冲序列的激发带宽问题作了讨论,在实验上用40% NaCl+60% NaNO₂粉末混合物对以上结论作了验证.

关键词: 多次激发, 四极核, 固态NMR

Abstract: A multiple excitation pulse sequence capable of greatly enhancing signal intensity is proposed for the measurement of the central line of half-integer quadrupolar nuclei in solids. The resultant signal-to-noise ratio as well as the excitation bandwidth were studied with the aid of numerical calculation. The superiority of the suggested method is demonstrated experimentally with a mixture of 40% NaCl + 60% NaNO₂ powders.

Key words: Multiple excitation, Quadrupolar nuclei, NMR in solids

李鲠颖, 邬学文. 半整数四极体系中心跃迁的多次激发NMR谱[J]. 波谱学杂志, 1992, 9(3): 283-288.

Li Gengying, Wu Xuewen. MULTIPLE EXCITATION IN THE CENTRAL TRANSITION OF HALF-INTEGER QUADRU-POLAR NUCLEI IN SOLIDS[J]. Chinese Journal of Magnetic Resonance, 1992, 9(3): 283-288.

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