@article {356,
	title = {Resolved magic-angle spinning of anisotropic samples in inhomogeneous fields},
	journal = {Chemical Physics Letters},
	volume = {358},
	year = {2002},
	note = {Chem Phys Lett565JGTimes Cited:10Cited References Count:14},
	month = {Jun 7},
	pages = {391-395},
	abstract = {<p>The chemical shift spectrum of a liquid embedded in a porous sample spinning at the magic angle has been recovered in the presence of static field and rf gradients. Field inhomogeneity and susceptibility broadening are averaged by a procedure that combines magic-angle turning with a train of z-rotation pulses. The experiment emulates the situation encountered in \&$\#$39;ex situ\&$\#$39; NMR in which the sample is located away from the field sources. Given the equivalence of field and sample spinning, the results suggest that the use of a rotating magnetic field and refocusing pulses might enable the study of samples such as solids or fluids in porous materials external to the magnet. (C) 2002 Elsevier Science B.V. All rights reserved.</p>
},
	keywords = {pulses},
	isbn = {0009-2614},
	doi = {Doi 10.1016/S0009-2614(02)00642-5},
	url = {<Go to ISI>://WOS:000176365900005},
	author = {Meriles, C. A. and Sakellariou, D. and Pines, A.}
}
@article {347,
	title = {Rotary resonance recoupling for half-integer quadrupolar nuclei in solid-state nuclear magnetic resonance spectroscopy},
	journal = {Journal of Chemical Physics},
	volume = {117},
	year = {2002},
	note = {J Chem Phys599CVTimes Cited:22Cited References Count:53},
	month = {Oct 15},
	pages = {7024-7033},
	abstract = {<p>Investigations were made of rotary resonance recouplings (R-3) of chemical shift anisotropy (CSA), heteronuclear dipolar (HTD), and homonuclear dipolar (HMD) couplings involving half-integer quadrupolar nuclei under magic-angle sample spinning condition. Under rotary resonance conditions provided by a low amplitude rf field and a high spinning speed, the spectrum of the central transition coherence of half-integer quadrupolar nuclei shows recouplings of CSA, HTD, and HMD interactions that depend on the ratio of the rf field to the spinning speed. These new properties can be used to extract electronic and structural information about the sample that are otherwise difficult to extract in the presence of a dominant quadrupolar interaction. An average Hamiltonian theory is used to explain the recoupling properties of various interactions. Experimental implementations of the R-3 are demonstrated on model compounds with spin-3/2 systems. (C) 2002 American Institute of Physics.</p>
},
	keywords = {polarization},
	isbn = {0021-9606},
	doi = {Doi 10.1063/1.1506907},
	url = {<Go to ISI>://WOS:000178317300016},
	author = {Wi, S. and Logan, J. W. and Sakellariou, D. and Walls, J. D. and Pines, A.}
}
