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Liquid hyperpolarized produced by phase exchange in a convection cell
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10.1063/1.1793350
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1 Department of Physics, University of Utah, Salt Lake City, Utah 84112
Appl. Phys. Lett. 85, 2429 (2004)
/content/aip/journal/apl/85/12/10.1063/1.1793350
http://aip.metastore.ingenta.com/content/aip/journal/apl/85/12/10.1063/1.1793350

## Figures

FIG. 1.

Diagram of a xenon convection cell. The cell is permanently sealed at the pull-off tip and consists of one contiguous volume. Spin-exchange optical pumping of takes place in the front spherical chamber (where ), and convection transports the polarized gas to the liquid reservoir at the back of the cell (where ). Arrows indicate the direction of convective flow. The dashed line indicates the boundary between the hot and cold chambers in the oven/refrigerator.

FIG. 2.

Polarization-decay transients for liquid (squares) and gas (circles) in the cell. The liquid decay more clearly shows evidence of biexponential behavior (see text); for times , the decay time is much longer than the later decay time of about .

## Tables

Table I.

Cells used in phase-exchange experiments. Shown for each cell are partial pressures of , , and (in mbar), maximum liquid and gas polarizations, and the ratio of liquid to gas atoms.

/content/aip/journal/apl/85/12/10.1063/1.1793350
2004-09-24
2014-04-24

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