Title

Optical pumping system design for large production of hyperpolarized Xe-129

Abstract

We present a design for a spin-exchange optical pumping system to produce large quantities of highly polarized Xe-129. Low xenon concentrations in the flowing gas mixture allow the laser to maintain high Rb polarization. The large spin-exchange rate between Rb and Xe-129 through the long-lived van der Waals molecules at low pressure, combined with a high flow rate, results in large production rates of hyperpolarized xenon. We report a maximum polarization of 64% achieved for a 0.3 l/h Xe flow rate, and maximum magnetization output of 6 l/h at 22% polarization. Our findings regarding the polarization dependence on temperature, nitrogen partial pressure, and gas mixture flow velocity are also reported.

Department

Physics

Publication Date

2-9-2006

Journal Title

Physical Review Letters

Publisher

AMERICAN PHYSICAL SOCIETY

Digital Object Identifier (DOI)

10.1103/PhysRevLett.96.053002

Document Type

Article

Rights

© 2006 The American Physical Society

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