6533b83afe1ef96bd12a70e2
RESEARCH PRODUCT
Far-off-resonance averaging of dipolar interactions in solids
Gerald HinzeI. ChangRoland BöhmerHans SillescuGregor Diezemannsubject
Nuclear and High Energy PhysicsCondensed matter physicsChemistryBiophysicsCondensed Matter PhysicsBiochemistryMolecular physicsResonance (particle physics)530Pulse separationDipolesymbols.namesakeTransverse relaxationOff resonancesymbolsFrequency offsetDiffusion (business)Hamiltonian (quantum mechanics)description
Abstract The far-off-resonance performance of several line-narrowing sequences is investigated. Both theoretically and experimentally, it is found that transverse relaxation times, dominated by dipole–dipole interactions, are most effectively prolonged not only on-resonance but also for certain, generally large, resonance offsets. These correspond to a situation when, during the basic pulse separation, the frequency offset rotates the toggling-frame Hamiltonian by multiples of 180°. The implications of these results for the study of macroscopic translational diffusion using static-field-gradient NMR are discussed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-01-01 |