核磁共振弛豫时间与溶液浓度关系的实验研究  

Experimental Study of the Relationship between NMR Relaxation Time and the Concentration of Solutions

作　　者：臧充之[1] 张洁天[1] 彭培芝[1] 

机构地区：[1]北京大学物理学院,北京,100871

出　　处：《物理通报》2005年第10期30-32,共3页Physics Bulletin

摘　　要：利用小型核磁共振成像仪可以测量样品弛豫时间的功能,设计方案,实验测定了硫酸铜水溶液中氢原子核的核磁共振弛豫时间T1、T2随硫酸铜浓度的变化关系,得到T1与T2随溶质浓度的增大而减小的实验结果.在误差允许的范围内,验证了T1与溶液浓度成反比的规律,并进行了分析和理论解释.The NMR relaxation times T1 and T2 of hydrogen nuclei in a solution of copper sulfate in water was measured as the solution concentration was varied. T1 and T2 both decreased as the concentration of the solution increased. The inverse relationship between T1 and the concentration of solution is experimentally demonstrated and theoretically explained within the range of the experiment.

关 键 词：核磁共振 自旋-晶格弛豫 自旋-自旋弛豫 弛豫时间 硫酸铜 核磁共振成像仪 实验测定 溶液浓度 溶质浓度 理论解释 

分 类 号：O571.2[理学—粒子物理与原子核物理] TM26[理学—物理]