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:
Feb. 12, 2008
Filed:
Jul. 29, 2003
Iouri Kalinitchenko, Berwick, AU;
Iouri Kalinitchenko, Berwick, AU;
Varian Australia Pty, Ltd., Mulgrave, Victoria, AU;
Abstract
A mass spectrometer in which a substance is introduced into a plasma () which contains analyte ions as the plasma () is passing through an aperture (), for example in a skimmer cone () between two vacuum regions () and () so that the substance interacts with the plasma () thereby reducing the concentration of interfering polyatomic or multicharged ions in the plasma by reactive or collisional interactions. The substance may be supplied via passage () having an outlet () in skimmer cone (). The invention gives improved attenuation of interfering ions because the substance is supplied directly into the plasma () as it is substantially radially confined by aperture () and before an ion beam () is extracted. Alternatively or additionally a substance may be supplied directly into the plasma within aperture () in sampling cone ().