Fluid-flow characterization with nuclear spins without magnetic resonance

TitleFluid-flow characterization with nuclear spins without magnetic resonance
Publication TypeJournal Article
Year of Publication2008
AuthorsCrawford C.W, Xu S.J, Siegel E.J, Budker D., Pines A
JournalApplied Physics Letters
Volume93
Issue9
Date PublishedSep 1
ISBN Number0003-6951
Accession NumberWOS:000258975800042
Keywordsmri
Abstract

A technique for noninvasive monitoring of flow inside metallic enclosures using laser-based atomic magnetometry is introduced. The analyte is labeled via nuclear magnetization by magnets, thereby combining the polarization and encoding steps. No radiofrequency or audiofrequency pulses are involved. We demonstrate detection of flow inside an aluminum pipe with an inner diameter of 4.9 mm that has a constriction with a diameter of 1.6 mm and a length of 6.4 mm. The results agree with a model of spin density and relaxation indicating that our technique allows for fast, quantitative, and noninvasive diagnostics of flow with potential applications discussed below. (c) 2008 American Institute of Physics.

URL<Go to ISI>://WOS:000258975800042
DOI10.1063/1.2977773
Short TitleFluid-flow characterization with nuclear spins without magnetic resonance
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