Voltage supplies for mass spectrometers

A method of operating a mass spectrometer comprises supplying at least one mass-dispersive operating voltage of the mass spectrometer from a passive charge storage device. The mass-dispersive voltage may be a voltage between an inner and outer electrode of an electrostatic Kingdon ion trap. Alternat...

Full description

Saved in:
Bibliographic Details
Main Authors Jochen Franzen, Claus Köster
Format Patent
LanguageEnglish
Published 07.10.2020
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
ELECTRICITY
Online AccessGet full text

Cover

More Information
Summary:A method of operating a mass spectrometer comprises supplying at least one mass-dispersive operating voltage of the mass spectrometer from a passive charge storage device. The mass-dispersive voltage may be a voltage between an inner and outer electrode of an electrostatic Kingdon ion trap. Alternatively, the mass-dispersive voltage may be an accelerating voltage or reflector voltage of a time-of-flight analyser. The invention proposes the use of passive charge storage devices e.g. a capacitive voltage divider suitable for use in a vacuum, which may operate without any feedback control and which may display no measurable noise or ripple if well shielded, instead of using active operating high-voltage generators. Chemical charge storage devices (e.g. electrochemical batteries or accumulators) or capacitors with good insulation may be used as the passive charge storage device. These may display slight drifts due to continuous discharge, depending on their quality, but these drifts can be mathematically compensated.
Bibliography:Application Number: GB20200007873