Increasing the spin-lattice relaxation time of hyperpolarized xenon ice at 4.2 K

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DOIResolve DOI: http://doi.org/10.1063/1.1447311
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TypeArticle
Journal titleApplied Physics Letters
Volume80
Issue5
Pages886887; # of pages: 2
Subjectannealing; nuclear magnetic resonance; nuclear spin-lattice relaxation; xenon
AbstractAfter cryogenic trapping of hyperpolarized xenon produced by optical pumping, significant increases in the spin-lattice relaxation time (T1) of 129Xe in solid xenon at 4.2 K can be achieved by annealing the solid at an appropriate temperature. Thus, T1 at 4.2 K in a field of 180 G increased from 20.4 to 35 h on warming a sealed sample initially condensed at 77 K in an isopentane bath at 113 K for 10 min. This provides further confirmation that the primary relaxation mechanism for 129Xe at low temperature is cross relaxation to 131Xe and demonstrates that long term storage of hyperpolarized xenon produced using flow polarizers is feasible.
Publication date
AffiliationNational Research Council Canada; NRC Steacie Institute for Molecular Sciences
Peer reviewedNo
NPARC number12328742
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Record identifierdc314d51-cbba-4a34-a865-bc39deca309e
Record created2009-09-10
Record modified2016-05-09
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