Magnetic resonance imaging of convection in laser-polarized xenon

We demonstrate nuclear magnetic resonance (NMR) imaging of the flow and diffusion of laser-polarized xenon (129Xe) gas undergoing convection above evaporating laser-polarized liquid xenon. The large xenon NMR signal provided by the laser-polarization technique allows more rapid imaging than one can...

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Bibliographic Details
Published in:Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics Statistical physics, plasmas, fluids, and related interdisciplinary topics, 2000-03, Vol.61 (3), p.2741-2748
Main Authors: Mair, R. W., Tseng, C. H., Wong, G. P., Cory, D. G., Walsworth, R. L.
Format: Article
Language:English
Subjects:
Convection
Diffusion
Lasers
Life Sciences (General)
Magnetic Resonance Spectroscopy - methods
Phantoms, Imaging
Physical Phenomena
Physics
Space life sciences
Xenon - analysis
Xenon - chemistry
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Summary:We demonstrate nuclear magnetic resonance (NMR) imaging of the flow and diffusion of laser-polarized xenon (129Xe) gas undergoing convection above evaporating laser-polarized liquid xenon. The large xenon NMR signal provided by the laser-polarization technique allows more rapid imaging than one can achieve with thermally polarized gas-liquid systems, permitting shorter time-scale events such as rapid gas flow and gas-liquid dynamics to be observed. Two-dimensional velocity-encoded imaging shows convective gas flow above the evaporating liquid xenon, and also permits the measurement of enhanced gas diffusion near regions of large velocity variation.
ISSN:1063-651X
1095-3787
DOI:10.1103/PhysRevE.61.2741