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提出一种描述自旋体系密度算符演化的新方法,可统一处理核磁共振波谱学中强、弱偶合自旋体系及弱射频场存在下密度算符的演化。具体分析一些核磁共振实验:自旋轻扰、自旋锁定、偶极耦合作用、强耦合AB和ABX自旋体系的演化。A new formalism for describing the evolution of density operators was proposed. It can evaluate the evolution of density operators of strongly and weakly coupled spin systems in a u-nified way, and describe the experiments involving weak RF pluse. Some problems were explicitly treated including spin tickling, isotropic mixing in systems of two coupled nuclei (I= 1/2), dipolar evolution and strongly coupled AB and ABX spin systems.
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