| 在强辐射阻尼存在下完全反转态的线型 |
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| 引用本文： | 罗会俊,王复,史新梅,潘铁英.在强辐射阻尼存在下完全反转态的线型[J].波谱学杂志,2000,17(3):197-201. |
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| 作者姓名： | 罗会俊 王复 史新梅 潘铁英 |
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| 作者单位： | 华东理工大学分析测试中心, 上海 200237 |
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| 基金项目： | the ECUST-BRUKER joint NMR laboratory(Shanghai,China);; |
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| 摘 要： | 在180°脉冲加z方向脉冲梯度场作用后,采样得到90%水样的自由感应衰减信号,其具有几乎完整的双曲正割函数特征,并通过付立叶变换得到其频谱,发现其具有强烈的震荡特征,这与通常用不完善的180°单脉冲观测到的相位畸变有所不同,并且发现这种强震荡只有在强辐射阻尼存在下以及θ0非常接近180°时才能观测到.在辐射阻尼线型理论基础上,合理的理论计算已进行,我们得到了与实验观测相当一致的结果.
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| 关 键 词： | FT-NMR 线型 辐射阻尼 震荡 |
| 收稿时间： | 2000-01-30 |
THE LINESHAPE OF AN UNSTABLE COMPLETEINVERSION STATE IN THE PRESENCEOF STRONG RADIATION DAMPING |
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| LUO Huijun,WANG Fu,SHI Xinmei,PAN Tieying.THE LINESHAPE OF AN UNSTABLE COMPLETEINVERSION STATE IN THE PRESENCEOF STRONG RADIATION DAMPING[J].Chinese Journal of Magnetic Resonance,2000,17(3):197-201. |
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| Authors: | LUO Huijun WANG Fu SHI Xinmei PAN Tieying |
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| Institution: | Analysis and Research Center, East China University of Science and Tec hnology, Shanghai 200237 |
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| Abstract: | For the strong radiation damping case(i.e.,90%H2O in D2O), it has been found experimentally that when the initial angle of the magnetization relative to the B0 direction, θ0, is very close to π, the Fourier transformed spectra corresponding to the FIDs with hyperbolic envelope are characteristic of very strong oscillation, which is apparently different from that obtained with near-π pulse. This great oscillating feature can be reasonably explained in terms of the radiation damping lineshape theory. |
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| Keywords: | FT-NMR FT-NMR Lineshape Radiation damping Oscillation |
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