| 核磁共振弛豫和辐射阻尼效应的计算机模拟 |
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| 引用本文： | 郑炳文,蔡淑惠,陈忠.核磁共振弛豫和辐射阻尼效应的计算机模拟[J].厦门大学学报(自然科学版),2004,43(1):36-39. |
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| 作者姓名： | 郑炳文 蔡淑惠 陈忠 |
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| 作者单位： | 1. 厦门大学物理学系,福建,厦门,361005
2. 厦门大学物理学系,福建,厦门,361005;厦门大学化学系,福建,厦门,361005 |
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| 基金项目： | 国家自然科学基金(10234070,10005006)，福建省自然科学基金(A0210003)资助 |
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| 摘 要： | 对核磁共振弛豫过程和辐射阻尼效应进行了理论分析和计算机模拟,以直观明了的方式描述了这些物理过程,并对模拟结果进行了讨论.模拟结果表明:横向弛豫和纵向弛豫过程在辐射阻尼很小时,不管实验参数如何设定,磁化矢量路径始终发生在以平衡态磁化矢量为半径的球内;当受到强辐射阻尼影响时,磁化矢量路径则发生在以平衡态磁化矢量为半径的球面上.
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| 关 键 词： | 核磁共振 弛豫 辐射阻尼 计算机模拟 |
| 文章编号： | 0438-0479(2004)01-0036-04 |
| 修稿时间： | 2003年4月9日 |
Computer Simulation on the Radiation Damping and Relaxation Processes in NMR |
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| rZHENG Bing-wen ,CAI Shu-hui,CHEN Zhong.Computer Simulation on the Radiation Damping and Relaxation Processes in NMR[J].Journal of Xiamen University(Natural Science),2004,43(1):36-39. |
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| Authors: | rZHENG Bing-wen CAI Shu-hui CHEN Zhong |
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| Institution: | rZHENG Bing-wen ~1,CAI Shu-hui~1,CHEN Zhong ~ |
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| Abstract: | Theoretical analysis and computer simulations of radiation damping and relaxation processes in NMR were performed. Simulation results showed that (1) when the effect of radiation damping was ignored, the pathway of magnetization vector was always in a sphere, of which the radius was equal to the magnitude of the magnetization vector at equilibrium state; (2) when the effect of radiation damping was much stronger than the relaxation effect, the pathway of magnetization vector was on the sphere. The results presented herein are helpful to understand the physical properties of these processes. |
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| Keywords: | NMR longitudinal relaxation transverse relaxation radiation damping computer simulation |
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