Longitudinal muon spin relaxation in muonium-like systems
Longitudinal muon spin relaxation in muonium-like systems
复制标题
类介子系统中的纵向介子自旋弛豫
DOI：
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发表时间：
1994
期刊：
影响因子：
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通讯作者：
D. Sivia
中科院分区：
文献类型：
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作者：
S. Cox;D. Sivia
使用耦合电子和核自旋态之间跃迁概率的经典表达式来处理顺磁系统中的核自旋晶格弛豫。控制这些状态的不相干占据的速率方程通过分析（如果可能）和数值（如果不可能）求解，以构造核自旋的弛豫函数。该方法以μ和μ取代的分子自由基为例，针对由于局部场波动引起的扰动的情况，即与第三自旋相互作用的调制。对于缓慢的波动，证明了与单指数行为的轻微偏离。
Nuclear spin-lattice relaxation in paramagnetic systems is treated using the classic expression for transition probability between the coupled electron and nuclear spin states. The rate equations governing the incoherent occupancies of these states are solved analytically (where possible) and numerically (where not) to construct the relaxation function for the nuclear spin. The method is illustrated for muonium, and the muonium-substituted molecular radicals, for the case of perturbation due to fluctuation of the local field,i.e. modulation of the interaction with a third spin. A slight departure from single exponential behaviour is demonstrated for slow fluctuations.