| 核磁共振稳态吸收的新用法 |
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| 引用本文： | 雷前召.核磁共振稳态吸收的新用法[J].河南师范大学学报(自然科学版),2010,38(1). |
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| 作者姓名： | 雷前召 |
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| 作者单位： | 渭南师范学院,物理与电子工程系,陕西,渭南,714000 |
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| 基金项目： | 陕西省教育厅专项科研基金，渭南师范学院重点教改项目 |
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| 摘 要： | 研究了利用核磁共振的稳态吸收法测量横向驰豫时间T2.用连续的弱辐射场与样品相互作用,用示波器观察共振吸收信号,然后把调好的信号采集到电脑,使用专用软件进行傅立叶变换得到频域信号,利用布洛赫方程所推出线宽和横向驰豫时间的关系,就可以求出T2,把所得结果和传统方法测得的T2进行了对比,结果较为理想.
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| 关 键 词： | 核磁共振 稳态吸收 横向弛豫时间 布洛赫方程 |
A New Usage of Steady-State Absorption Method to NMR |
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| Abstract: | Steady-state absorption method to NMR is studied to measure the cross relation time(T2). With continuous weak radiation field effecting the sample,resonant absorption signal is taken over and observed by using oscillograph; Adjusting the signal to ideal state,collecting it to a computer,using a special software to realize Fourier Transform,frequency-domain signal is obtained; By using the relation of the width and cross relaxation time(T2),T2 is obtained. The result is ideal by contrasting with that obtained by traditional method. |
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| Keywords: | nuclear magnetic resonance(NMR) steady-state absorption cross relaxation time Bloch equation |
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