The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 08, 1997
Filed:
Jun. 07, 1995
Timothy Chupp, Ann Arbor, MI (US);
Kevin P Coulter, Ann Arbor, MI (US);
Eduardo Oteiza, Cambridge, MA (US);
Ronald Walsworth, Cambridge, MA (US);
Smithsonian Astrophysical Observatory, Cambridge, MA (US);
The Regents of the University of Michigan, Ann Arbor, MI (US);
Abstract
A method and system for producing polarized .sup.129 Xe gas in an economical manner, allowing the polarized .sup.129 Xe gas to be used commercially in research and clinical applications. The production system of the present invention includes a holding tank for holding an unpolarized xenon gas/nitrogen gas mixture. The holding tank is in communication with a temperature controlled polarization chamber. A wide spectrum high power light source such as a diode laser array is in communication with the polarization chamber. The alkali metal vapor is optically pumped by the light source. The polarization chamber, which contains a given quantity of an alkali metal and its associated vapor, receives the gaseous mixture from the holding tank. The optically pumped alkali metal vapor atoms then collide with the xenon gas atoms, thus polarizing the xenon atoms. The entire gaseous mixture expands out of the polarization chamber into a device that separates the alkali metal vapor atoms from the polarized .sup.129 Xe atoms. The polarized .sup.129 Xe atoms are then controllably output to a system/user interface for application purposes.