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:
Sep. 01, 2015
Filed:
May. 18, 2013
Fasmatech Science & Technology SA, Athens, GR;
Dimitris Papanastasiou, Athens, GR;
Emmanuel Raptakis, Athens, GR;
FASMATECH SCIENCE AND TECHNOLOGY SA, Lefkippos Technology Park, NCSR Demokritos Patriarchou Grigoriou and Neapoleos Agia Paraskevi, Athens, GR;
Abstract
The present disclosure relates to mass spectrometers and, in particular, multipole ion guides and control units that set the RF and DC potentials at the ion guide to, among other uses, radially confine an ion beam. In an exemplary embodiment, the ion guide includes circumferentially arranged elongated rods disposed about a common axis that form longitudinally traversing segments. At least a first and a second subset of the segments have an equal number of elongated rods and are physically configured to receive respective first and a second set of RF voltage waveforms from a control unit that produce a field distribution of a first order and a field distribution of a second order, respectively, different from the first order. The ratio of the number of rods to the order of the field distribution produced is an integer number.