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Title: Optical Pumping System Design for Large Production of Hyperpolarized {sup 129}Xe

Abstract

We present a design for a spin-exchange optical pumping system to produce large quantities of highly polarized {sup 129}Xe. Low xenon concentrations in the flowing gas mixture allow the laser to maintain high Rb polarization. The large spin-exchange rate between Rb and {sup 129}Xe 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.

Authors:
; ;  [1]
  1. Department of Physics, University of New Hampshire, Durham, New Hampshire 03824 (United States)
Publication Date:
OSTI Identifier:
20778590
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 96; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevLett.96.053002; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; FLOW RATE; MAGNETIZATION; MIXTURES; NITROGEN; OPTICAL PUMPING; PARTIAL PRESSURE; POLARIZATION; RUBIDIUM; SPIN EXCHANGE; VAN DER WAALS FORCES; XENON 129

Citation Formats

Ruset, I.C., Ketel, S., and Hersman, F.W.. Optical Pumping System Design for Large Production of Hyperpolarized {sup 129}Xe. United States: N. p., 2006. Web. doi:10.1103/PHYSREVLETT.96.0.
Ruset, I.C., Ketel, S., & Hersman, F.W.. Optical Pumping System Design for Large Production of Hyperpolarized {sup 129}Xe. United States. doi:10.1103/PHYSREVLETT.96.0.
Ruset, I.C., Ketel, S., and Hersman, F.W.. Fri . "Optical Pumping System Design for Large Production of Hyperpolarized {sup 129}Xe". United States. doi:10.1103/PHYSREVLETT.96.0.
@article{osti_20778590,
title = {Optical Pumping System Design for Large Production of Hyperpolarized {sup 129}Xe},
author = {Ruset, I.C. and Ketel, S. and Hersman, F.W.},
abstractNote = {We present a design for a spin-exchange optical pumping system to produce large quantities of highly polarized {sup 129}Xe. Low xenon concentrations in the flowing gas mixture allow the laser to maintain high Rb polarization. The large spin-exchange rate between Rb and {sup 129}Xe 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.},
doi = {10.1103/PHYSREVLETT.96.0},
journal = {Physical Review Letters},
number = 5,
volume = 96,
place = {United States},
year = {Fri Feb 10 00:00:00 EST 2006},
month = {Fri Feb 10 00:00:00 EST 2006}
}