Patent · US Expired

Adjustment of the sample support in time-of-flight mass spectrometers

US5910656A · kind A · utility

5Cited by

3References

18Claims

0Family size

Assignee

Bruker Daltonik GmbH · DE

Inventors

Claus Koster · Lilienthal, DE
Armin Holle · Oyten, DE
Jochen Franzen · Bremen, DE

Key dates

Filing date	Aug 14, 1997
Grant date	Jun 8, 1999
Priority date	—
Expiry date	Aug 14, 2017

Classification

Technology area (CPC H)Electricity
CPC primaryH01J49/0409
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A time-of-flight mass spectrometers, in which the ions are generated by ionization of analyte substances on a sample support, by matrix-assisted laser desorption (MALDI). The time-of-flight mass spectrometer consists of using space-adjusting actuators to set the spacing of the sample support from the nearest acceleration electrode so that the flight time of ions of a reference substance prescribed by the calibration can be precisely adjusted. Due to this adjustment of the spacing, a once only calibration of the relationship between the flight time and mass (i.e. the mass scale) may be constantly retained.

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