Patent · US Active

Ion trapping

US7847243B2 · kind B2 · utility

7Cited by

8References

23Claims

0Family size

Assignee

THERMO FINNIGAN LLC · US

Inventors

Alexander A. Makarov · Bremen, DE
Eduard V. Denisov · Bremen, DE
Gerhard Jung · Delmenhorst, DE
Robert Malek · Lilienthal, DE
Oliver Lange · Bremen, DE

Key dates

Filing date	Mar 29, 2006
Grant date	Dec 7, 2010
Priority date	—
Expiry date	Jul 9, 2027

Classification

Technology area (CPC H)Electricity
CPC primaryH01J49/4295
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.