Patent · US Active

Method and apparatus for mass analysis utilizing ion charge feedback

US9324547B2 · kind B2 · utility

7Cited by

4References

38Claims

0Family size

Assignee

THERMO FISHER SCIENTIFIC (BREMEN) GMBH · DE

Inventors

Jan-Peter Hauschild · Eindhoven, NL
Oliver Lange · Bremen, DE
Ulf Froehlich · Bremen, DE
Andreas Wieghaus · Bremen, DE
Alexander Kholomeev · Bremen, DE
Alexander A. Makarov · Bremen, DE

Key dates

Filing date	May 18, 2012
Grant date	Apr 26, 2016
Priority date	—
Expiry date	May 18, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH01J49/425
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method of mass analysis and a mass spectrometer are provided wherein a batch of ions is accumulated in a mass analyzer; the batch of ions accumulated in the mass analyzer is detected using image current detection to provide a detected signal; the number of ions in the batch of ions accumulated in the mass analyzer is controlled using an algorithm based on a previous detected signal obtained using image current detection from a previous batch of ions accumulated in the mass analyzer; wherein one or more parameters of the algorithm are adjusted based on a measurement of ion current or charge obtained using an independent detector located outside of the mass analyzer.

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