Abstract : From two-dimensional multiquantum NMR spectra of quadrupolar nuclei, it is now possible to obtain much greater resolution than in a classical single-quantum magic-angle spinning or variable-angle spinning spectrum. We describe here a very simple pulse scheme which efficiently excites the desired multiquantum NMR coherence and a new acquisition procedure which yields to pure-absorption mode 2D spectra. Experimental spectra for 87Rb in polycrystalline rubidium nitrate illustrate the method.
https://hal-normandie-univ.archives-ouvertes.fr/hal-02280881
Contributeur : Christian Fernandez
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Soumis le : vendredi 6 septembre 2019 - 16:39:51
Dernière modification le : lundi 23 septembre 2019 - 10:06:48
