Mass spectrometer and method of mass spectrometry

Details Mass spectrometer and method of mass spectrometry Mass spectrometer and method of mass spectrometry

2006-05-02

2006-05-02

Lee, John R. (Department: 2881)

Radiant energy

Ionic separation or analysis

C250S282000, C250S287000, C250S292000, C250S3960ML, C250S397000

Reexamination Certificate

active

07038197

ABSTRACT:
A mass spectrometer is disclosed wherein a z-lens upstream of an orthogonal acceleration Time of Flight mass analyser is repeatedly switched between a first mode wherein ions are transmitted to the mass analyser for subsequent mass analysis with a relatively high transmission and a second mode wherein ions are transmitted with a relatively low transmission. If it is determined that mass spectral data obtained when the mass analyser is in the first mode is suffering from saturation, then suitably scaled mass spectral data obtained when the mass analyser is in the second mode is used instead. If the saturation is severe then the mass spectral data obtained in the first mode may be replaced in its entirety with mass spectral data obtained in the second mode.

REFERENCES:
patent: 4686365 (1987-08-01), Meek et al.
patent: 4771172 (1988-09-01), Weber-Grabau et al.
patent: 5107109 (1992-04-01), Stafford, Jr. et al.
patent: 5300774 (1994-04-01), Buttrill, Jr.
patent: 5468957 (1995-11-01), Franzen
patent: 5572022 (1996-11-01), Schwartz et al.
patent: 5747800 (1998-05-01), Yano et al.
patent: 6080985 (2000-06-01), Welkie et al.
patent: 6294790 (2001-09-01), Weinberger
patent: 6586727 (2003-07-01), Bateman et al.
patent: 6642514 (2003-11-01), Bateman et al.
patent: 6717130 (2004-04-01), Bateman et al.
patent: 6747271 (2004-06-01), Gonin et al.
patent: 6756587 (2004-06-01), Bateman et al.
patent: 6781117 (2004-08-01), Willoughby et al.
patent: 6794641 (2004-09-01), Bateman et al.
patent: 6794642 (2004-09-01), Bateman et al.
patent: 6812453 (2004-11-01), Bateman et al.
patent: 6822222 (2004-11-01), Hayek et al.
patent: 6835928 (2004-12-01), Bateman
patent: 6878929 (2005-04-01), Green et al.
patent: 2002/0063205 (2002-05-01), Green et al.
patent: 2002/0063206 (2002-05-01), Bateman et al.
patent: 2004/0041091 (2004-03-01), Bateman et al.
patent: 2004/0084613 (2004-05-01), Bateman et al.
patent: 2004/0188603 (2004-09-01), Bateman et al.
patent: 2004/0232327 (2004-11-01), Bateman et al.
patent: 905743 (1999-03-01), None
patent: 1215711 (2002-06-01), None
patent: 2369721 (2002-06-01), None
patent: 2382921 (2003-06-01), None
patent: 63-279555 (1988-11-01), None
patent: 04-066862 (1992-03-01), None
patent: 2000-048764 (2000-04-01), None
patent: 2000-082439 (2000-05-01), None
patent: 2000-277050 (2000-10-01), None
patent: WO 98/50941 (1998-11-01), None
M. Cavenago, Linac96 Conference, Aug. 26-30, 1996, “Optimization of Ion Source Extraction and Transport with Symbolic manipulation Programs: Electrostatic Lenses Formulas”, http://linac96.web.cern.ch/Linac96/Proceedings/Monday/MOP29/Paper.html/.
Stoffels et al., Intl. J. Mass Spectrom. and Ion Phys., “An Ion Detecting and Measuring System with Wide Dynamic Range”, vol. 28, pp. 159-169, 1978.
Yost et al., 35thASMS Conference on Mass Spectrometry and Allied Topics, Picogram to Microgram Analysis by Gas Chromatography/Ion Trap Mass Spectrometry, pp. 789-790, May 24-29, 1987.

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