@article {316,
	title = {Isotropic proton-detected local-field nuclear magnetic resonance in solids},
	journal = {Journal of Chemical Physics},
	volume = {122},
	year = {2005},
	note = {J Chem Phys899JFTimes Cited:1Cited References Count:31},
	month = {Feb 15},
	abstract = {<p>A nuclear magnetic resonance method is presented which produces linear, isotropic proton-detected local-field spectra for INS spin systems in powdered samples. The method, heteronuclear isotropic evolution (HETIE), refocuses the anisotropic portion of the heteronuclear dipolar coupling frequencies by evolving the system under a series of specially designed Hamiltonians and evolution pathways. The theory behind HETIE is presented along with experimental studies conducted on a powdered sample of ferrocene, demonstrating the methodology outlined in this paper. Applications of HETIE for use in structure determination in the solid state are discussed. (C) 2005 American Institute of Physics.</p>
},
	keywords = {spectra},
	isbn = {0021-9606},
	doi = {Doi 10.1063/1.1844296},
	url = {<Go to ISI>://WOS:000227140000043},
	author = {Havlin, R. H. and Walls, J. D. and Pines, A.}
}
@article {359,
	title = {Investigations of low-amplitude radio frequency pulses at and away from rotary resonance conditions for I=5/2 Nuclei},
	journal = {Solid State Nuclear Magnetic Resonance},
	volume = {22},
	year = {2002},
	note = {Solid State Nucl Mag613WLTimes Cited:8Cited References Count:40},
	month = {Sep-Nov},
	pages = {97-109},
	abstract = {<p>Additional experimental evidence of rotary resonance effects for multiple-quantum coherence conversion in a spin-5/2 system is presented. Two-dimensional plots of the relative efficiency of MQ excitation and conversion are given as a function of radio frequency (rf) amplitude and pulse width. Data are presented for the excitation of five-quantum coherence (5QC), as well as for 5QC to three-quantum coherence (3QC) conversion, 5QC to 1QC (the central transition coherence) conversion, and 3QC to 1 QC conversion. A two-fold increase in the signal-to-noise ratio is achieved by substituting low amplitude rf pulses in place of hard rf pulses for 5QC excitation and 5QC to 3QC conversion in a mixed multiple-quantum magic angle spinning (MAS) (MMQMAS) experiment. The anisotropic line shape for the low-amplitude rf pulse version of the MMQMAS experiment was observed to be distorted from the MAS line shape. The cause and implications of the distortion are discussed. (C) 2002 Elsevier Science (USA).</p>
},
	keywords = {solid-state},
	isbn = {0926-2040},
	doi = {Doi 10.1006/Snmr.2002.0084},
	url = {<Go to ISI>://WOS:000179154400003},
	author = {Logan, J. W. and Urban, J. T. and Walls, J. D. and Lim, K. H. and Jerschow, A. and Pines, A.}
}
