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:
Oct. 01, 2013
Filed:
Aug. 05, 2011
Alexander A. Makarov, Bremen, DE;
Mikhail A. Monastyrskiy, Moskow, RU;
Dmitry E. Grinfeld, Ramenskoye, RU;
Alexander A. Makarov, Bremen, DE;
Mikhail A. Monastyrskiy, Moskow, RU;
Dmitry E. Grinfeld, Ramenskoye, RU;
Thermo Fisher Scientific (Bremen) GmbH, Bremen, DE;
Abstract
An ion trap comprises substantially elongate electrodessome of which are curved along their axis of elongation and which define a trapping volume between them. The sectional area of this trapping volume towards the extremities of the trap in the direction of elongation is different to the sectional area away from its extremities (eg towards the middle of the trap). In a preferred embodiment, the trap has a plurality of elongate electrodes, wherein opposed electrodes have different radii of curvature so that the trap splays towards its extremities. Thereby, a wider mass range of ions can be trapped and ejected, a higher space charge capacity (for a given trap length) is provided, and sharper ion beam focussing on ejection is possible.