| 超强磁场中核磁共振信号与屏蔽效应的理论研究 |
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| 引用本文： | 张帆,胡一帆,胡泽宇.超强磁场中核磁共振信号与屏蔽效应的理论研究[J].波谱学杂志,2010,27(2):230-237. |
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| 作者姓名： | 张帆 胡一帆 胡泽宇 |
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| 作者单位： | 华中科技大学物理学院,湖北,武汉,430074;华中科技大学控制科学与工程系,湖北,武汉,430074 |
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| 基金项目： | 华中科技大学理学院基金资助项目 |
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| 摘 要： | 研究了超强磁场对于核磁共振样品中双原子分子中电子系统的哈密顿量的影响,并且给出了磁共振信号中由于外磁场与氢原子电子系统相互作用所产生的含有B02的修正项.基于核磁共振原理,获得了利用氢的NMR谱对超强磁场进行精确测量的理论依据,推导出了一种基于核磁共振技术的超强磁场测量公式,从而在理论上证明了对超强磁场进行精确测量是可行的.
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| 关 键 词： | 核磁共振(NMR) 强磁场 磁场测量 核磁屏蔽 |
| 收稿时间： | 2009-07-23 |
A Theoretical Study of NMR Signal and Shielding Effect at Ultra-High Magnetic Field |
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| ZHANG Fan,HU Yi-fan,HU Ze-yu.A Theoretical Study of NMR Signal and Shielding Effect at Ultra-High Magnetic Field[J].Chinese Journal of Magnetic Resonance,2010,27(2):230-237. |
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| Authors: | ZHANG Fan HU Yi-fan HU Ze-yu |
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| Institution: | 1. Department of Physics, Huazhong University of Science and Technology, Wuhan 430074, China;;
2. Department of Control Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China |
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| Abstract: | The effects of ultra-high magnetic field on Hamiltonian of electronic system of diatom molecule in NMR samples were studied. The interactions between the external magnetic field and the electronic system of the diatom molecule were shown to give correction terms for NMR signals that is proportional toB20. Given the result, we proposed a method to measure ultra-high magnetic field strength with NMR signals. |
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| Keywords: | NMR ultra-high magnetic field field mapping shielding effect |
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