Stochastic dipolar recoupling in nuclear magnetic resonance of solids.
I describe a nuclear magnetic resonance (NMR) technique, called stochastic dipolar recoupling (SDR), that permits continuous experimental control of the character of spin dynamics between coherent and incoherent limits in a system of magnetic dipole-coupled nuclei. In the fully incoherent limit of SDR, spin polarization transfers occur at distance-dependent rates without the quantum mechanical interferences among pairwise dipole-dipole couplings that often limit the feasibility or precision of structural studies of solids by NMR. In addition to facilitating structural studies, SDR represents a possible route to experimental studies of effects of decoherence on the dynamics of quantum many-body systems.
Tycko
Robert
R
Laboratory of Chemical Physics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892-0520, USA. robertty@mail.nih.gov
D000409:Alanine / Q000737:chemistry*; D002247:Carbon Isotopes; D003198:Computer Simulation; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D008280:Magnetics; D008958:Models, Molecular; D011789:Quantum Theory; D012710:Serum Albumin, Bovine / Q000737:chemistry*
D002247:Carbon Isotopes; D012710:Serum Albumin, Bovine; D000409:Alanine