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:
Dec. 07, 2010
Filed:
Mar. 29, 2006
Alexander Alekseevich Makarov, Cheshire, GB;
Eduard V. Denisov, Bremen, DE;
Gerhard Jung, Delmenhorst, DE;
Robert Malek, Lilienthal, DE;
Oliver Lange, Bremen, DE;
Alexander Alekseevich Makarov, Cheshire, GB;
Eduard V. Denisov, Bremen, DE;
Gerhard Jung, Delmenhorst, DE;
Robert Malek, Lilienthal, DE;
Oliver Lange, Bremen, DE;
Thermo Finnigan LLC, San Jose, CA (US);
Abstract
This invention relates to a method of trapping ions and to an ion trapping assembly. In particular, the present invention has application in gas-assisted trapping of ions in an ion trap prior to a mass analysis of the ions in a mass spectrometer. The invention provides a method of trapping ions in a target ion trap of an ion trapping assembly that comprises a series of volumes arranged such that ions can traverse from one volume to the next, the volumes including the target ion trap, whereby ions are allowed to pass repeatedly through the volumes such that they also pass into and out from the target ion trap without being trapped. Potentials may be used to reflect the ions from respective ends of the ion trapping assembly. Optionally, a potential well and/or gas-assisted cooling may be used to cause the ions to settle in the target ion trap.