| 14N遥测核四极共振中的偏离共振效应 |
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| 引用本文： | 李鲠颖,蒋瑜.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. |
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| 作者姓名： | 李鲠颖 蒋瑜 |
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| 作者单位： | 华东师范大学分析测试中心, 上海 200062 |
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| 基金项目： | This work was financially supported by Science and Technology Commission of Shanghai Municipality with"the Morning Star Project for Young Scientists |
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| 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。
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| 关 键 词： | 遥测NQR 偏离共振效应 激发带宽 |
| 收稿时间： | 1992-08-27 |
OFF - RESONANCE EFFECT IN ~(14)N REMOTE NQR SPECTROSCOPY |
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| Li Gengying,Jiang Yu and Wu Xuewen.OFF - RESONANCE EFFECT IN ~(14)N REMOTE NQR SPECTROSCOPY[J].Chinese Journal of Magnetic Resonance,1993,10(2):165-170. |
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| Authors: | Li Gengying Jiang Yu and Wu Xuewen |
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| Institution: | Analytical Center, East China Normal University, Shanghai 200062 |
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| 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. |
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| Keywords: | 14N remote NQR Off-resonance effect Excitation bandwidth |
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