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:
Nov. 19, 2013
Filed:
Nov. 04, 2011
Gerardo A. Brucker, Longmont, CO (US);
Kenneth D. Van Antwerp, Colorado Springs, CO (US);
G. Jeffery Rathbone, Longmont, CO (US);
Scott C. Heinbuch, Fort Collins, CO (US);
Michael N. Schott, Loveland, CO (US);
Barbara Jane Hinch, Edison, NJ (US);
Alexei V. Ermakov, Highland Park, NJ (US);
Gerardo A. Brucker, Longmont, CO (US);
Kenneth D. Van Antwerp, Colorado Springs, CO (US);
G. Jeffery Rathbone, Longmont, CO (US);
Scott C. Heinbuch, Fort Collins, CO (US);
Michael N. Schott, Loveland, CO (US);
Barbara Jane Hinch, Edison, NJ (US);
Alexei V. Ermakov, Highland Park, NJ (US);
Brooks Automation, Inc., Chelmsford, MA (US);
Abstract
An ion trap includes an electrode structure, including a first and a second opposed mirror electrodes and a central lens therebetween, that produces an electrostatic potential in which ions are confined to trajectories at natural oscillation frequencies, the confining potential being anharmonic. The ion trap also includes an AC excitation source having an excitation frequency f that excites confined ions at a frequency of about twice the natural oscillation frequency of the ions, the AC excitation frequency source preferably being connected to the central lens. In one embodiment, the ion trap includes a scan control that mass selectively reduces a frequency difference between the AC excitation frequency and about twice the natural oscillation frequency of the ions.