Method and apparatus for accumulating hyperpolarized xenon

Details Method and apparatus for accumulating hyperpolarized xenon Method and apparatus for accumulating hyperpolarized xenon

2007-10-16

2007-10-16

Doerrler, William C (Department: 3744)

Refrigeration

Cryogenic treatment of gas or gas mixture

Solidification

Reexamination Certificate

active

11111442

ABSTRACT:
A method and apparatus for the accumulation of hyperpolarized129Xe is described. A gas mixture comprising129Xe is flowed through a heat exchanger tube from the first end to the second end. Concurrently, the outer surface of the heat exchanger tube is controllably refrigerated, beginning with the second end, to a temperature low enough to freeze the129Xe on the inner surface of the heat exchanger tube.

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