Patent · US Expired

Ion reflector

US5017780A · kind A · utility

52Cited by

8References

10Claims

0Family size

Inventors

Roland Kutscher · Biebertal, DE
Raimund Grix · Neu-Ulm, DE
Gangqiang Li · Palo Alto, US
Hermann Wollnik · Santa Fe, US

Key dates

Filing date	Sep 20, 1989
Grant date	May 21, 1991
Priority date	—
Expiry date	Sep 20, 2009

Classification

Technology area (CPC H)Electricity
CPC primaryH01J49/405
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention covers novel ion reflectors which are conceived principally for use in time-of-flight mass spectrometry. Caused by special electrodes of conical construction, such ion reflectors also have special ion-optical properties which are made possible through optimum compensation of the spherical and chromatic aberrations both of the ion flight times and of the ion flight paths. The time and place focusing of the ions hereby achieved means for time-of-flight mass spectrometers high mass resolution capability and high transmissions.

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