| 激光极化129Xe核自旋弛豫率的测量 |
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| 引用本文： | 王春华,孙献平. 激光极化129Xe核自旋弛豫率的测量[J]. 波谱学杂志, 2000, 17(3): 191-195 |
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| 作者姓名： | 王春华 孙献平 |
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| 作者单位： | 1.华中师范大学物理系, 武汉 430079;2.中国科学院武汉物理与数学研究所 波谱与原子分子物理国家重点实验室, 武汉 430071 |
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| 基金项目： | 国家重点实验室基金;T981513; |
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| 摘 要： | 由弱磁场下光泵自旋交换、强磁场中核磁共振测量方法,获得激光极化低压同位素129Xe气体的核自旋弛豫率1/T1及其与N2气压力、环境温度的关系.结果表明:在291K的室温下,对于0~11 333.05Pa的N2气压力范围,1/T1随着N2气压力的增加而增大;N2气压力为1 466.63Pa时,1/T1随着样品温度从234K到292K增高而减小
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| 关 键 词： | 激光极化129Xe 核磁共振测量 光泵 弛豫 |
| 收稿时间： | 2000-03-14 |
MEASUREMENT OF THE NUCLEAR SPIN RELAXATION RATE OF THE LASER-POLARIZED 129Xe GAS |
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| WANG Chunhua,SUN Xianping. MEASUREMENT OF THE NUCLEAR SPIN RELAXATION RATE OF THE LASER-POLARIZED 129Xe GAS[J]. Chinese Journal of Magnetic Resonance, 2000, 17(3): 191-195 |
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| Authors: | WANG Chunhua SUN Xianping |
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| Affiliation: | 1.Department of Physics, Central China Normal University, Wuhan 430079;2.State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071 |
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| Abstract: | The nuclear spin relaxation rate 1/T-1 of the laser-polarized {129} Xe produced in a low magnetic field was measured in a high magnetic field. The relations between the 1/T-1 and the pressure of N-2 or the temperature were obtained. The r esults s how that the 1/T-1 increases as the pressure of N-2 varies from 0 to 11333 .05Pa when the temperature was kept in 291K, and that the 1/T-1 d ecreases as the temperature varies from 234K to 292K when the pressure of N-2 was 1466.63Pa, |
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| Keywords: | Laser-polarized {129}Xe NMR measurement Opt ically pumping Relaxation |
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