Patent · US Active

Switchable ion guide

US11862450B2 · kind B2 · utility

1Cited by

6References

22Claims

0Family size

Assignee

THERMO FISHER SCIENTIFIC (BREMEN) GMBH · DE

Inventors

Henning Wehrs · Bremen, DE
Johannes Schwieters · Ganderkesee, DE
Gerhard Jung · Delmenhorst, DE

Key dates

Filing date	May 19, 2020
Grant date	Jan 2, 2024
Priority date	—
Expiry date	Sep 18, 2040

Classification

Technology area (CPC H)Electricity
CPC primaryH01J49/4215
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An ion optical arrangement (1) for use in a mass spectrometer comprises a collision cell defining an ion optical axis along which ions may pass, electrodes comprising a set of parallel poles (11A, 11B, 11C) arranged in the collision cell, and a voltage source for providing voltages to the electrodes to produce electric fields. The ion optical arrangement is arranged for switching between a first operation mode in which the collision cell is pressurized and a second operation mode in which the collision cell is substantially evacuated. The ion optical arrangement is further arranged for producing a radio frequency electric focusing field in the first operation mode and a static electric focusing field in the second operation mode.

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