Patent · US Expired

Quadrupole ion trap with switchable multipole fractions

US5468958A · kind A · utility

59Cited by

7References

13Claims

0Family size

Assignee

Bruker-Franzen Analytik GmbH · DE

Inventors

Jochen Franzen · Bremen, DE
Yang Wang · Suzhou, CN

Key dates

Filing date	Jul 20, 1994
Grant date	Nov 21, 1995
Priority date	—
Expiry date	Jul 20, 2014

Classification

Technology area (CPC H)Electricity
CPC primaryH01J49/424
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An ion trap is provided in which higher multipole field fractions can be switched on and off and, in addition, can be electrically tuned. Specifically, the electrodes of an ideally shaped ion trap are divided into rotationally symmetrical component electrodes positioned facing the interior of the ion trap on a hyperboloidal surface with rotationally symmetry.

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