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Combining PGSE NMR with homonuclear dipolar decoupling
KTH, Tidigare Institutioner                               , Kemi.ORCID-id: 0000-0002-6524-1441
KTH, Tidigare Institutioner                               , Kemi.ORCID-id: 0000-0002-0231-3970
2000 (Engelska)Ingår i: Journal of magnetic resonance, ISSN 1090-7807, E-ISSN 1096-0856, Vol. 144, nr 1, s. 142-149Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

A new robust approach for combining multiple-pulse homonuclear decoupling and ROSE NMR is introduced for accurately measuring molecular diffusion coefficients in systems with nonvanishing static homonuclear dipolar couplings. Homonuclear decoupling suppresses dipolar dephasing during the gradient pulses but its efficiency and scaling factor for the effective gradient vary across the sample because of the large variation of the frequency offset caused by the gradient. The resulting artifacts are reduced by introducing a slice selection scheme. The method is demonstrated by F-19 PGSE NMR experiments in a lyotropic liquid crystal.

Ort, förlag, år, upplaga, sidor
2000. Vol. 144, nr 1, s. 142-149
Nyckelord [en]
PGSE NMR, homonuclear dipolar decoupling, slice selection, molecular diffusion, liquid crystal, nuclear-magnetic-resonance, multiple-pulse nmr, pentadecafluorooctanoate-water-system, studying translational diffusion, gradient spin-echo, solid-state nmr, liquid-crystals, self-diffusion, field gradients, spectroscopy
Identifikatorer
URN: urn:nbn:se:kth:diva-19749ISI: 000087004900018OAI: oai:DiVA.org:kth-19749DiVA, id: diva2:338441
Anmärkning
QC 20100525Tillgänglig från: 2010-08-10 Skapad: 2010-08-10 Senast uppdaterad: 2017-12-12Bibliografiskt granskad

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Dvinskikh, Sergey V.Furo, Istvan

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