| 结合脉冲梯度场(PFG)的选择性形状脉冲的相位特性研究 |
| |
| 引用本文： | 郑绍宽,林东海.结合脉冲梯度场(PFG)的选择性形状脉冲的相位特性研究[J].波谱学杂志,1998,15(6):527-531. |
| |
| 作者姓名： | 郑绍宽 林东海 |
| |
| 作者单位： | 1. 厦门大学物理系, 厦门 361005;2. 厦门大学化学系, 厦门 361005 |
| |
| 摘 要： | 从转动矩阵理论与实验两方面研究了结合脉冲梯度场的选择性形状脉冲的相位特性,结果表明:单梯度自旋回波(SPFGSE)和双梯度自旋回波(DPFGSE)对于对称和反对称的形状脉冲,都能很好地克服其相位畸变;而双梯度自旋回波(DPFGSE)对于非对称的形状脉冲也能克服其相位畸变;双选择性单梯度自旋回波无法克服形状脉冲的相位畸变.
|
| 关 键 词： | NMR 脉冲梯度场(PFG) 形状脉冲(shaped pulse) 相位特性(phase property) |
| 收稿时间： | 1998-06-08 |
A STUDY OF PHASE PROPERTY OF SELECTIVE SHAPED PULSES IN COMBINATION WITH PFG |
| |
| Zheng Shaokuan,Lin Donghai ,Liao Xinli ,Lin Guoxing and Wu Qinyi.A STUDY OF PHASE PROPERTY OF SELECTIVE SHAPED PULSES IN COMBINATION WITH PFG[J].Chinese Journal of Magnetic Resonance,1998,15(6):527-531. |
| |
| Authors: | Zheng Shaokuan Lin Donghai Liao Xinli Lin Guoxing and Wu Qinyi |
| |
| Institution: | 1. Dept. of Phys. Xiamen University, Xiamen 361005;2. Dept. of Chem. Xiamen University, Xiamen 361005 |
| |
| Abstract: | The phase properties of selective pulses in combination with PFG has been studied theoretically and experimentally. The results show that: for symmetric and antisymmetric shaped pulses, by using selective single PFG spin echo(SPFGSE) and selective double PFG spin echo (DPFGSE), pure in phase magnetization can be obtained in their whole excitation bandwidth. However, for other shaped pulses, the magnetization without phase distortions can only be obtained by using DPFGSE. Moreover, using doubly selective SPFGSE, neither symmetric (or antisymmetric) nor non symmetric shaped pulses can provide pure in phase magnetization. |
| |
| Keywords: | NMR PFG Shaped pulse Phase property |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《波谱学杂志》浏览原始摘要信息 |
| 点击此处可从《波谱学杂志》下载免费的PDF全文 |
