Slow diffusion by singlet state NMR spectroscopy |
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| Authors: | Cavadini Simone Dittmer Jens Antonijevic Sasa Bodenhausen Geoffrey |
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| Affiliation: | Contribution from the Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne, BCH, 1015 Lausanne, Switzerland. |
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| Abstract: | Small diffusion coefficients can be measured by using populations of singlet states that have a relaxation time constant, T(s), which can be much longer than the longitudinal relaxation time, T1. Spatial information can be encoded with pulsed field gradients in the manner of stimulated echo sequences. Singlet states can be excited via double-quantum coherences to enhance the efficiency of phase encoding and decoding. |
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