Ion guide chamber

Details Ion guide chamber Ion guide chamber

2011-05-03

2011-05-03

Johnston, Phillip A (Department: 2881)

Radiant energy

Ionic separation or analysis

Cyclically varying ion selecting field means

C250S288000, C250S292000

Reexamination Certificate

active

07935922

ABSTRACT:
An ion guide chamber comprising a gas-tight elongate chamber, at least one first electrode for generating a field for transporting ions along the elongate chamber and at least one second electrode for generating a field for focusing ions within the elongate chamber. The elongate chamber, e. g. constituted by a glass tube, comprises a resistive structure extending substantially along a main axis of the chamber, whereas the first electrode is constituted by the resistive structure. Furthermore, the second electrode is arranged outside the elongate chamber. Having the RF electrodes arranged outside the vacuum chamber, provides a mechanically simple solution as well as insuring that contamination of the RF electrodes to the analyte gas cannot occur. This allows for a cost-saving design of the RF electrodes and with the corresponding voltages outside the chamber, preferably at atmospheric pressure or high vacuum, avoids discharges within the tube.

REFERENCES:
patent: 4963736 (1990-10-01), Douglas et al.
patent: 5248882 (1993-09-01), Liang
patent: 5598001 (1997-01-01), Flory et al.
patent: 5847386 (1998-12-01), Thomson et al.
patent: 6075244 (2000-06-01), Baba et al.
patent: 6111250 (2000-08-01), Thomson et al.
patent: 6140638 (2000-10-01), Tanner et al.
patent: 6586727 (2003-07-01), Bateman et al.
patent: 6593570 (2003-07-01), Li et al.
patent: 6627912 (2003-09-01), Bandura et al.
patent: 6674071 (2004-01-01), Franzen et al.
patent: 6800851 (2004-10-01), Zubarev et al.
patent: 6900431 (2005-05-01), Belov et al.
patent: 7034292 (2006-04-01), Whitehouse et al.
patent: 7064322 (2006-06-01), Crawford et al.
patent: 7081618 (2006-07-01), Laprade
patent: 7309861 (2007-12-01), Brown et al.
patent: 7498569 (2009-03-01), Ding
patent: 2001/0052569 (2001-12-01), Bateman et al.
patent: 2003/0136905 (2003-07-01), Franzen et al.
patent: 2004/0183007 (2004-09-01), Belov et al.
patent: 2005/0001163 (2005-01-01), Belov et al.
patent: 2006/0071162 (2006-04-01), Crawford et al.
patent: 2006/0169890 (2006-08-01), Crawford et al.
patent: 2008/0149825 (2008-06-01), Kozlovski et al.
patent: 1643536 (2006-04-01), None
patent: 1933365 (2008-06-01), None
patent: 1933366 (2008-06-01), None
Dodonov, A. et al., A new Technique for Decomposition of Selected Ions in Molecule Ion Reactor Coupled with Ortho-Time-of-flight Mass spectrometry, Rapid Communications in Mass Spectrometry, vol. 11, pp. 1649-1656, 1997.
Douglas, D. J. et al., Collisional Cooling Effects in Radio Frequency Quadrupoles, American Society for Mass Spectrometry, pp. 398-408, 1992.
Gerlich, D.—“Inhomogeneous RF Fields: A Versatile Tool for the Study of Processes with Slow Ions”, State-Selected and State-to-State Ion-Molecule Reaction Dynamics. Part 1: Experiment; Advances in Chemical Physics Series; vol. LXXXII, 1992.
Hoffmann E. et al.—“The ICP-ToF Mass Spectrometer: An Alternative for Elemental Analysis”, Spectroscopy Europe, vol. 17, No. 1, pp. 16-23, 2005.
Landau, L.D. and Lifshitz, E.M.—Mechanics, 3rd Edition (vol. 1 of Course of Theoretical Physics), pp. 93-95; First published by Pergamon Press plc 1960.
Raznikov V. et al.—Ion Rotating Motion in a Gas-Filled Radio-Frequency Quadrupole Ion Guide as a New Technique for Structural and Kinetic Investigations of Ions; Rapid Communications in Mass Spectrometry; pp. 1912-1921; 2001.
Watson J. et al.—“A Technique for Mass Selective Ion Rejection in a Quadrupole Reaction Chamber”, International Journal of Mass Spectrometry and Ion Processes; pp. 225-235, 1989.

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