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Article Dans Une Revue Molecular Physics Année : 2000

Theoretical and experimental study of quadrupolar echoes for half-integer spins in static solid-state NMR

Résumé

Numerical simulations of powder spectra produced by a two-pulse sequence applied to a quadrupolar nuclei system of half-integer spin number make it possible to propose simple experimental instructions to record static echo spectra with minimum lineshape distortion. Calculations take into account quadrupolar (first and second orders), shielding, scalar and inhomogeneous dipolar interactions as well as the radiofrequency pulse specifications (strength, duration, phase). The suggested instructions have been checked experimentally in different cases: for a large spin number system with Li93NbO3, when two interactions are present with a 63/65Cu complex, and in the two-site system of 87Rb2SO4.
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Dates et versions

hal-01009297 , version 1 (17-06-2014)

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Philippe Bodard, Jean-Paul Amoureux, Yves Dumazy, Ronan Lefort. Theoretical and experimental study of quadrupolar echoes for half-integer spins in static solid-state NMR. Molecular Physics, 2000, 19, pp.1545-1551. ⟨10.1080/00268970009483360⟩. ⟨hal-01009297⟩
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