@article {395,
	title = {Surface selective H-1/Si-29 CP NMR by NOE enhancement from laser polarized xenon},
	journal = {Journal of Magnetic Resonance},
	volume = {133},
	year = {1998},
	note = {J Magn Reson116WNTimes Cited:27Cited References Count:20},
	month = {Aug},
	pages = {299-303},
	abstract = {<p>The surface proton spin polarization created by the spin-polarization-induced nuclear Overhauser effect from optically polarized xenon can be transferred in a subsequent step by solid-state cross polarization to another nuclear spin species such as Si-29. The technique exploits the dipolar interactions of xenon nuclear spins with high gamma nuclei such as H-1, and is experimentally simpler than direct polarization transfer from Xe-129 to heteronuclei such as C-13 and Si-29. (C) 1998 Academic Press.</p>
},
	keywords = {spins},
	isbn = {1090-7807},
	doi = {Doi 10.1006/Jmre.1998.1447},
	url = {<Go to ISI>://WOS:000075748200008},
	author = {Pietrass, T. and Seydoux, R. and Pines, A.}
}
@article {430,
	title = {Isotropic second-order dipolar shifts in the rotating frame},
	journal = {Journal of Chemical Physics},
	volume = {104},
	year = {1996},
	note = {J Chem PhysUm909Times Cited:9Cited References Count:44},
	month = {Jun 1},
	pages = {8258-8268},
	abstract = {<p>An experiment is described that utilizes the truncation of the Hamiltonian in the rotating frame by a radio-frequency field designed to yield an isotropic shift for the dipolar coupling. This approach allows the measurement of a normally orientation-dependent coupling constant by a single isotropic value. The dipolar isotropic shift is closely related to the field-dependent chemical shift in solids due to the second-order dipolar perturbation observed in magic-angle spinning experiments. In the rotating frame, larger shifts of up to 1000 Hz can be observed for the case of a one-bond C-H coupling compared to a shift of a few Hertz in the laboratory-frame experiment. In addition to the isotropic shift, a line broadening due to the P-4(cos beta) terms is observed when the experiment is carried out under magic-angle sample spinning (MAS) conditions, leading to the requirement of higher-order averaging such as double rotation (DOR) for obtaining narrow lines. As an application of this new experiment the separation of CH, CH2, and CH3 groups in a 2D spectrum under MAS is demonstrated. Implemented under DOR it could be used as a technique to select carbon atoms according to the number of directly attached protons. (C) 1996 American Institute of Physics.</p>
},
	keywords = {spins},
	isbn = {0021-9606},
	doi = {Doi 10.1063/1.471579},
	url = {<Go to ISI>://WOS:A1996UM90900008},
	author = {Ernst, M. and Kolbert, A. C. and Schmidt-Rohr, K. and Pines, A.}
}
