%0 Journal Article %J Journal of Magnetic Resonance %D 2002 %T Laser-polarized Xe-129 NMR and MRI at ultralow magnetic fields %A Wong-Foy, A. %A Saxena, S. %A Moule, A. J. %A Bitter, H. M. L. %A Seeley, J. A. %A McDermott, R. %A Clarke, J. %A Pines, A. %K atoms %X

Laser-polarized Xe-129 and a high-T-c superconducting quantum interference device (SQUID) are used to obtain magnetic resonance images in porous materials at a magnetic field of 2.3 mT, corresponding to a Larmor frequency of 27 kHz. Image resolution of 1 mm is obtained with gradients of only 1 mT/m. The resolution of xenon chemical shifts in different physicochemical environments at ultralow fields is also demonstrated. Details of the circulating flow optical pumping apparatus and the SQUID spectrometer are presented. (C) 2002 Elsevier Science (USA).

%B Journal of Magnetic Resonance %V 157 %P 235-241 %8 Aug %@ 1090-7807 %G English %U ://WOS:000178377400009 %N 2 %M WOS:000178377400009 %! Laser-polarized Xe-129 NMR and MRI at ultralow magnetic fields %R Doi 10.1006/Jmre.2002.2592