Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 4 of 4 for “"quadrupolar interaction"”.
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Multinuclear NMR studies of zeolites and heme-proteins
The quadrupolar interaction having an electrostatic origin, reveals itself in a variety of ways in NMR spectroscopy. In solids, where motions are highly restricted, the quadrupolar interaction is anisotropic and orientation dependent. The static and time dependent parts of the quadrupolar …
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A nuclear magnetic resonance study of UNI₂AL₃
The theory for the combined effects of both a quadrupolar interaction and a Knight shift has been examined for the case of non-axial symmetry. A detailed derivation is given, correct to second order in perturbation theory, for the case where the quadrupole interaction is significantly smaller than …
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Coherence and state engineering of an optically active central spin system
… used to refocus the strong hyperfine interaction between the spin and the nuclear ensemble. The measurement demonstrates a nearly hundred-fold improvement of the electron spin coherence over the state of the art in the conventional InGaAs QDs. This is owed to the reduced inhomogeneity …
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Advancing characterization techniques for structure-property determination of in-situ lignocelluloses
… dynamic mechanical analysis (DMA), deuterium quadrupolar nuclear magnetic resonance (2H NMR) and rheo-infrared spectroscopy. A novel parallel-plate compressive-torsion DMA protocol is developed to analyze very small solvent-plasticized biomass specimens with or without mechanical integrity. …