14N遥测核四极共振中的偏离共振效应

波谱学杂志 ›› 1993, Vol. 10 ›› Issue (2): 165-170.

¹⁴N遥测核四极共振中的偏离共振效应

李鲠颖, 蒋瑜, 邬学文

华东师范大学分析测试中心, 上海 200062

收稿日期:1992-08-27 修回日期:1992-11-06 出版日期:1993-06-05 发布日期:2018-01-20
基金资助:
This work was financially supported by Science and Technology Commission of Shanghai Municipality with "the Morning Star Project for Young Scientists"

OFF-RESONANCE EFFECT IN ¹⁴N REMOTE NQR SPECTROSCOPY

Li Gengying, Jiang Yu, Wu Xuewen

Analytical Center, East China Normal University, Shanghai 200062

Received:1992-08-27 Revised:1992-11-06 Online:1993-06-05 Published:2018-01-20
Supported by:
This work was financially supported by Science and Technology Commission of Shanghai Municipality with "the Morning Star Project for Young Scientists"

摘要/Abstract

摘要： 本文对遥测NQR谱中的偏离共振效应作了较详细地研究,发现¹⁴N谱线的强度随偏离共振效应而变化。当偏离共振强度与射频场强度接近时,测得的谱线强度最大。该效应可用来增强¹⁴N遥测NQR谱仪的灵敏度。上述实验现象在理论上采用脉冲的激发带宽方法作了解释和讨论。

关键词: 遥测NQR, 偏离共振效应, 激发带宽

Abstract: Off-resonance effect in ¹⁴N remote NQR was studied in detail. It is discovered that the observed ¹⁴N remote NQR signal intensity is strongly dependent on the strength of off-resonance and reaches its maximum value when the offset is close to the rf field strength. This dependence of signal intensity upon off-resonance may be used to increase the sensitivity of the ¹⁴N remote NQR spectrometer. The result is discussed and explained theoretically by the numerical calculation of pulse excitation bandwidth.

Key words: ¹⁴N remote NQR, Off-resonance effect, Excitation bandwidth

李鲠颖, 蒋瑜, 邬学文. ¹⁴N遥测核四极共振中的偏离共振效应[J]. 波谱学杂志, 1993, 10(2): 165-170.

Li Gengying, Jiang Yu, Wu Xuewen. OFF-RESONANCE EFFECT IN ¹⁴N REMOTE NQR SPECTROSCOPY[J]. Chinese Journal of Magnetic Resonance, 1993, 10(2): 165-170.

¹⁴N遥测核四极共振中的偏离共振效应

OFF-RESONANCE EFFECT IN ¹⁴N REMOTE NQR SPECTROSCOPY

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