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:
Jul. 01, 2003
Filed:
Feb. 28, 2002
Tihiro Ohkawa, La Jolla, CA (US);
Archimedes Technology Group, Inc., San Diego, CA (US);
Abstract
A device for separating high-mass ions (having cyclotron frequency &OHgr; ) from low-mass ions (having cyclotron frequency &OHgr; ) in a plasma includes a chamber. Coils are provided to generate a substantially uniform magnetic field in the chamber. An antenna is provided to launch a left-hand elliptically polarized electromagnetic wave into the chamber along the stationary magnetic field that is evanescent in the multi-species plasma. Importantly, the E vector of the elliptically polarized electromagnetic wave rotates at a frequency, &ohgr;, where &OHgr; <&ohgr;<&OHgr; . Ponderomotive forces are generated by the electromagnetic wave that cause the low-mass ions to move toward the antenna while causing the high-mass ions to move away from the antenna.