A TANDEM ION-TRAP TIME-OF-FLIGHT MASS SPECTROMETER

Title:

A TANDEM ION-TRAP TIME-OF-FLIGHT MASS SPECTROMETER

Document Type and Number:

WIPO Patent Application WO2005083742

Kind Code:

A3

Abstract:

A tandem linear ion trap and time-of-flight mass spectrometer, where the ion trap has a straight central axis orthogonal to the flight path of the mass spectrometer. The ion trap comprises a set of electrodes, (401, 403, 402, 404) at least one of the electrodes has a slit for ejecting ions towards the mass spectrometer; a set of DC voltage supplies (+V, -V, V1, V2) to provide discrete DC levels and a number of fast electronic switches (409) for connecting/disconnecting the DC supplies to at least two of the electrodes; a neutral gas filling the ion trap and a digital controller to provide a switching procedure of ion trapping, manipulation with ions, cooling and including a state at which all ions are ejected from the ion trap towards the mass spectrometer.

Inventors:

SUDAKOV MICHAEL (GB)
DING LI (GB)

Application Number:

PCT/GB2005/000671

Publication Date:

June 08, 2006

Filing Date:

February 23, 2005

Export Citation:

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Assignee:

SHIMADZU RES LAB EUROPE LTD (GB)
SUDAKOV MICHAEL (GB)
DING LI (GB)

International Classes:

H01J49/40; H01J49/42

Domestic Patent References:

WO2001029875A2

2001-04-26

Foreign References:

US6545268B1	2003-04-08
US20020092980A1	2002-07-18
US5763878A	1998-06-09
EP1302973A2	2003-04-16

Other References: