{"id":{"repo_id":"aachen","oai_identifier":"oai:publications.rwth-aachen.de:56631"},"canonical_url":"https://search.dev.ndltd.org/etd/aachen/oai:publications.rwth-aachen.de:56631","repository":{"repo_id":"aachen","name":"RWTH Aachen University","base_url":"https://publications.rwth-aachen.de/oai2d"},"display":{"title":"Ein- und zweidimensionale Hadamard-Kernresonanz-Spektroskopie","abstract":"The goal of this thesis was to develop new methods in the field of stochastic nuclear magnetic resonance (NMR). Based on an optimized implementation of the stochastic technique, it was possible to extend the detectable bandwidth to a maximum value of 300.000 - 400.000 Hz, so that a series of new potential applications in solid state NMR spectroscopy became possible. The feasibilities of the new technique have been demonstrated by the application of the Hadamard-technique in 27Al solid state spectroscopy (as an example of stochastic solid state spectroscopy of quadrupolar nuclei) and in 2H solid state spectroscopy (for the study of molecular motion in perdeuterated DMS). In addition to the 1D solid state experiments also methods for twodimensional Hadamard-Spectroscopy (based on a stochastic sum excitation) had been developed and various stochastic 2D-Experiments on liquids were performed. It could be shown that the Hadamard 2D spectra are comparable with the 2D correlation spectra known from conventional COSY experiments in pulsed FT-spectroscopy. By introducing relative phase shifts between the binary excitation sequences (which together build up the sum sequence) complex 2D phase cycling could be realized. 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In addition to the 1D solid state experiments also methods for twodimensional Hadamard-Spectroscopy (based on a stochastic sum excitation) had been developed and various stochastic 2D-Experiments on liquids were performed. It could be shown that the Hadamard 2D spectra are comparable with the 2D correlation spectra known from conventional COSY experiments in pulsed FT-spectroscopy. By introducing relative phase shifts between the binary excitation sequences (which together build up the sum sequence) complex 2D phase cycling could be realized. 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