Patent · US Active

Three-dimensional RF ion traps with high ion capture efficiency

US7872229B2 · kind B2 · utility

4Cited by

7References

6Claims

0Family size

Assignee

Bruker Daltonik GmbH · DE

Inventors

Melvin Andrew Park · Billerica, US
Michael Schubert · Parkton, US
Jochen Franzen · Bremen, DE

Key dates

Filing date	Jul 14, 2008
Grant date	Jan 18, 2011
Priority date	—
Expiry date	Sep 10, 2028

Classification

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

Abstract

In a three-dimensional Paul RF ion trap at least one of the ring electrode and end cap electrodes is structured to produce a high capture efficiency for analyte ions introduced into the trap. The electrode structuring may be produced by an electrode surface profile having edges or protrusions, resulting in a scattering reflection of the introduced ions. Alternatively, at least one electrode may be formed by physically separate electrode components. In one embodiment, the trap can be switched between operating as a linear ion trap with good capture efficiency and operating as a three-dimensional ion trap with good ion reaction conditions.

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