【摘要】 对核磁共振弛豫过程和辐射阻尼效应进行了理论分析和计算机模拟,以直观明了的方式描述了这些物理过程,并对模拟结果进行了讨论.模拟结果表明:横向弛豫和纵向弛豫过程在辐射阻尼很小时,不管实验参数如何设定,磁化矢量路径始终发生在以平衡态磁化矢量为半径的球内;当受到强辐射阻尼影响时,磁化矢量路径则发生在以平衡态磁化矢量为半径的球面上.更多还原

【Abstract】 Theoretical analysis and computer simulations of radiation damping and relaxation processes in NMR were performed. Simulation results showed that (1) when the effect of radiation damping was ignored, the pathway of magnetization vector was always in a sphere, of which the radius was equal to the magnitude of the magnetization vector at equilibrium state; (2) when the effect of radiation damping was much stronger than the relaxation effect, the pathway of magnetization vector was on the sphere. The results presented herein are helpful to understand the physical properties of these processes.更多还原