Bloch equations for anisotropic paramagnetic centers with spin of 1/2.

Bloch equations for anisotropic paramagnetic centers with spin of 1/2.
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DOI:
10.1016/j.jmr.2013.05.009
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发表时间:
2013-08
影响因子:
2.2
通讯作者:
Bowman, Michael K.
Bowman, Michael K.
中科院分区:
化学3区
文献类型:
--
作者:
Maryasov, Alexander G.;Bowman, Michael K.

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布洛赫方程是磁共振中描述各向同性自旋系统动力学的宝贵工具。然而,当布洛赫方程被重新表述为各向异性自旋系统时,它们的大部分效用都失去了,因为它们描述的自旋演化在物理上是不可观察的。根据在磁共振和其它实验中测量的物理性质磁矩,导出了这些各向异性系统的一组布洛赫方程。该方程描述了包括弛豫的磁矩的动态,并且仅包含实验可测量的参数。
The Bloch equations are an invaluable tool in magnetic resonance for describing the dynamics of isotropic spin systems. However, when the Bloch equations are reformulated for anisotropic spin systems, much of their utility is lost because the spin evolution they describe is not physically observable. A set of Bloch-like equations are derived for these anisotropic systems in terms of the magnetic moment which is the physical property measured in magnetic resonance and other experiments. The equations describe the dynamics of the magnetic moment including relaxation and only contain parameters that are experimentally measurable.
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