Ion guide with reduced noding effect

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 12087567
APP PUB NO 20230343571A1
SERIAL NO

18339510

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Abstract

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An ion optical arrangement (1) for use in a mass spectrometer comprises electrodes (11, 12, 14) comprising a multipole arrangement defining an ion optical axis, and a voltage source for providing voltages to the electrodes to produce electric fields. The ion optical arrangement is configured for producing a radio frequency electric focusing field for focusing ions on the ion optical axis. The radio frequency electric focusing field has a varying frequency so as to reduce any mass dependence of ion trajectories through the ion optical arrangement. The ion optical arrangement may further be configured for producing a static electric field in response to a DC bias voltage applied to the multipole arrangement. A superimposed varying electric field may be produced by superimposing an AC voltage upon the DC bias voltage.

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Patent Owner(s)

Patent OwnerAddress
THERMO FISHER SCIENTIFIC (BREMEN) GMBHHANNA-KUNATH-STR 11 BREMEN 28199

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Jung, Gerhard Delmenhorst, DE 36 312
Schwieters, Johannes Ganderkesee, DE 58 164
Wehrs, Henning Bremen, DE 13 8

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