@article {407,
	title = {SQUID detected NMR of laser-polarized xenon at 4.2 K and at frequencies down to 200 Hz},
	journal = {Chemical Physics Letters},
	volume = {272},
	year = {1997},
	note = {Chem Phys LettXh440Times Cited:18Cited References Count:32},
	month = {Jun 27},
	pages = {245-249},
	abstract = {<p>A spectrometer based on a dc SQUID (superconducting quantum interference device) was used to record nuclear magnetic resonance signals from laser-polarized Xe-129 at 4.2 K and at frequencies ranging from about 200 Hz to 110 kHz in magnetic fields varying from about 0.02 to 9 mT. The Xe-129 resonance linewidths were found to increase with increasing magnetic field, and, at a given field, to increase with higher Xe-129 concentration. The spin-lattice relaxation times were observed to decrease from similar to 8000 s at 5 mT to similar to 2000 s at fields below 0.05 mT. Such long relaxation times make possible a variety of spin polarization transfer experiments. (C) 1997 Published by Elsevier Science B.V.</p>
},
	keywords = {relaxation},
	isbn = {0009-2614},
	doi = {Doi 10.1016/S0009-2614(97)88016-5},
	url = {<Go to ISI>://WOS:A1997XH44000017},
	author = {TonThat, D. M. and Ziegeweid, M. and Song, Y. Q. and Munson, E. J. and Appelt, S. and Pines, A. and Clarke, J.}
}
@article {456,
	title = {N-14 Squid Nqr of L-Ala-L-His and of Serine},
	journal = {Zeitschrift Fur Naturforschung Section a-a Journal of Physical Sciences},
	volume = {49},
	year = {1994},
	note = {Z Naturforsch AQh740Times Cited:2Cited References Count:15},
	month = {Dec},
	pages = {1188-1192},
	abstract = {N-14 nuclear quadrupole resonance spectroscopy, detected with a Superconducting Quantum Interference Device, makes possible the study of nitrogen environments in amino acids and small peptides.  The present experiments characterize:  1) the effects of intermolecular interactions upon the amino nitrogen of serine upon cocrystallization of the stereoisomers in a range of concentrations; 2) the changes of the amino and imidazole nitrogen environments brought about by combining L-Alanine and L-Histidine into the dipeptide L-Ala-L-His.},
	keywords = {n-14},
	isbn = {0932-0784},
	url = {<Go to ISI>://WOS:A1994QH74000013},
	author = {Wernerzwanziger, U. and Ziegeweid, M. and Black, B. and Pines, A.}
}
@article {455,
	title = {SQUID-NQR of N-14},
	journal = {NQI Newsletter},
	volume = {3},
	year = {1994},
	pages = {24-25},
	author = {Ziegeweid, M. and Werner, U. and Black, B. and Pines, A.}
}
@article {471,
	title = {Squid-Nqr of N-14 in Amino-Acids and Small Peptides},
	journal = {Chemical Physics Letters},
	volume = {209},
	year = {1993},
	note = {Chem Phys LettLh246Times Cited:7Cited References Count:13},
	month = {Jun 25},
	pages = {17-21},
	abstract = {<p>We present a technique for the study of nuclear quadrupole resonance of N-14 interacting with low electric field gradients as found, for example, in amino acids. A superconducting quantum interference device (SQUID) is used to detect directly small NMR signals via cross relaxation of the N-14 polarization to adjacent proton spins, eliminating the need for field cycling. When one nitrogen quadrupolar transition matches the proton Zeeman splitting, the remaining two quadrupolar transitions can be observed by sweeping a saturating rf field through resonance. In addition, signal enhancement by simultaneous excitation of two nitro n resonances helps to identify connected transitions.</p>
},
	keywords = {resonance},
	isbn = {0009-2614},
	doi = {Doi 10.1016/0009-2614(93)87194-8},
	url = {<Go to ISI>://WOS:A1993LH24600003},
	author = {Werner, U. and Black, B. and Ziegeweid, M. and Pines, A.}
}
