Mass spectrometer

Details Mass spectrometer Mass spectrometer

2005-03-29

2005-03-29

Lee, John R. (Department: 2881)

Radiant energy

Ionic separation or analysis

With sample supply means

C250S282000, C250S292000

Reexamination Certificate

active

06872939

ABSTRACT:
A mass spectrometer includes an ion detector positioned upstream of a quadrupole mass filter/analyser. Ions are passed through the quadrupole mass filter/analyser, stored in an ion trap and then passed back through the same mass filter/analyser before being detected by the upstream ion detector. With this arrangement, MS/MS experiments can be performed using an apparatus having only a single mass filter/analyser.

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patent: 6020586 (2000-02-01), Dresch et al.
patent: 6525312 (2003-02-01), Cousins
patent: 6627883 (2003-09-01), Wang et al.
patent: 6720554 (2004-04-01), Hager
patent: 20020024010 (2002-02-01), Hager
patent: 20030168589 (2003-09-01), Hager
patent: WO 0033350 (2000-06-01), None
patent: WO 0115201 (2001-03-01), None
patent: WO 0248699 (2002-06-01), None

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