TY - JOUR
T1 - Single- and Double-Resonance Experiments of Quadrupolar Nuclei in Solids Using Sensitivity Enhancement of the Central Transition
AU - Haase, Jürgen
AU - Conradi, Mark S.
AU - Oldfield, Eric
PY - 1994
Y1 - 1994
N2 - Population enhancement for NMR of the central transition of quadrupolar nuclei in solids is performed by using adiabatic radiofrequency sweeps of the satellite transitions. Single-resonance experiments are reported for 17O, 23Na, 27Al, and 93Nb nuclei in powders of Al2O3, NaNbO3, and LiNbO3, and in Pyrex glass. Experimental techniques using single-coil probe circuits capable of both wideband frequency sweeps and narrowband detection are presented. The combination of population enhancement with cross polarization from 27Al to 17O in α-Al2O3 (corundum) powder is demonstrated. The sensitivity-enhancement technique is robust, with no critical parameters.
AB - Population enhancement for NMR of the central transition of quadrupolar nuclei in solids is performed by using adiabatic radiofrequency sweeps of the satellite transitions. Single-resonance experiments are reported for 17O, 23Na, 27Al, and 93Nb nuclei in powders of Al2O3, NaNbO3, and LiNbO3, and in Pyrex glass. Experimental techniques using single-coil probe circuits capable of both wideband frequency sweeps and narrowband detection are presented. The combination of population enhancement with cross polarization from 27Al to 17O in α-Al2O3 (corundum) powder is demonstrated. The sensitivity-enhancement technique is robust, with no critical parameters.
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U2 - 10.1006/jmra.1994.1157
DO - 10.1006/jmra.1994.1157
M3 - Article
AN - SCOPUS:0010131528
SN - 1064-1858
VL - 109
SP - 210
EP - 215
JO - Journal of Magnetic Resonance, Series A
JF - Journal of Magnetic Resonance, Series A
IS - 2
ER -