CONFINING POSITVE AND NEGATIVE IONS WITH FAST OSCILLATING ELECTRIC POTENTIALS

Title:

CONFINING POSITVE AND NEGATIVE IONS WITH FAST OSCILLATING ELECTRIC POTENTIALS

Document Type and Number:

WIPO Patent Application WO2005074004

Kind Code:

A3

Abstract:

Methods and apparatus for trapping or guiding ions. Ions are introduced into an ion trap or ion guide. The ion trap or ion guide includes a first set of electrodes and a second set of electrodes. The first and second sets of electrodes are arranged to define an ion channel to trap or guide the introduced ions. Periodic voltages are applied to electrodes in the first set of electrodes to generate a first oscillating electric potential that radially confines the ions in the ion channel, and periodic voltages are applied to electrodes in the second set of electrodes to generate a second oscillating electric potential that axially confines the ions in the ion channel.

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Inventors:

SYKA JOHN E P (US)

Application Number:

PCT/US2005/001846

Publication Date:

August 03, 2006

Filing Date:

January 21, 2005

Export Citation:

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Assignee:

THERMO FINNIGAN LLC (US)
SYKA JOHN E P (US)

International Classes:

H01J49/42

Foreign References:

GB2378312A	2003-02-05
US4982087A	1991-01-01
US5206506A	1993-04-27
US20030183759A1	2003-10-02
US4755670A	1988-07-05

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