Publications [#268765] of G. Allan Johnson

Papers Published
  1. Levron, D; Walter, DK; Appelt, S; Fitzgerald, RJ; Kahn, D; Korbly, SE; Sauer, KL; Happer, W; Earles, TL; Mawst, LJ; Botez, D; Harvey, M; Dimarco, L; Connolly, JC; Möller, HE; Chen, XJ; Cofer, GP; Johnson, GA, Magnetic resonance imaging of hyperpolarized 129Xe produced by spin exchange with diode-laser pumped Cs, Applied Physics Letters, vol. 73 no. 18 (December, 1998), pp. 2666-2668, AIP Publishing [doi] .

    We report the results of experiments leading to the production of an image of a polarized 129Xe sample prepared by spin exchange with Cs, optically pumped with a spectrally narrowed 894.3 nm diode laser. Representative images of the average electron spin polarization are shown. Appreciable cesium electron polarization values were achieved, and a nuclear polarization of about 2.5% was measured for 129Xe. The absolute nuclear polarization was measured by water-calibrated free induction decay of the nuclear magnetic resonance signal, and the polarized xenon imaged using a 2 T magnetic resonance imaging system. © 1998 American Institute of Physics.