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Dipolar coupling spin dynamics: Perturbation approach

Journal of Physics A: Mathematical and General, ISSN: 0305-4470, Vol: 37, Issue: 33, Page: 8159-8166
2004
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Article Description

A perturbation method is presented which can be applied to the description of a wide range of physical problems that deal with dynamics of dipolarly coupled spins in solids. The method is based on expansion of e in a perturbation series. As an example of the application of the method, the multiple-quantum coherence dynamics in three- and four-spin clusters are considered. The calculated 0Q and 2Q intensities versus the duration of the preparation period give close agreement with exact results and simulations data. The exact solutions for J and J coherences in four-spin systems are obtained.

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