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:
Jun. 23, 2009
Filed:
Mar. 04, 2005
Adi A. Scheidemann, Baden, CH;
Gottfried P. Kibelka, Birmingham, AL (US);
Clare R. Long, Edmonds, WA (US);
Mark W. Dassel, Indianola, WA (US);
Adi A. Scheidemann, Baden, CH;
Gottfried P. Kibelka, Birmingham, AL (US);
Clare R. Long, Edmonds, WA (US);
Mark W. Dassel, Indianola, WA (US);
OI Corporation, College Station, TX (US);
Abstract
A focal plane detector assembly of a mass spectrometer includes an ion detector configured to detect ions crossing a focal plane of the spectrometer and an electrically conductive mesh lying in a plane parallel to the focal plane, positioned such that ions exiting a magnet of the mass spectrometer pass through the mesh before contacting the ion detector. The mesh is maintained at a low voltage potential, relative to a circuit ground, which shields ions passing through the magnet from high voltage charges from other devices, such as microchannel plate electron multipliers. The mesh may be mounted directly to the magnet or positioned some distance away. The detector array may include any suitable device, including a faraday cup detector array, a strip charge detector array, or a CCD detector array.