Method and apparatus for scanning an ion trap mass spectrometer

Details Method and apparatus for scanning an ion trap mass spectrometer Method and apparatus for scanning an ion trap mass spectrometer

2006-10-25

2009-08-25

Vanore, David A. (Department: 2881)

Radiant energy

Ionic separation or analysis

Methods

C250S287000, C250S292000

Reexamination Certificate

active

07579585

ABSTRACT:
A mass spectrometer system having an ion trap and a downstream mass spectrometer is provided. A plurality of groups of ions are provided to the ion trap and a first mass-to-charge ratio is selected. The downstream mass spectrometer is configured to filter out one of (i) ions having a first unselected mass-to-charge ratio different from the first mass-to-charge ratio, and (ii) mass signals for ions having the first unselected mass-to-charge ratio different from the first mass-to-charge ratio. A first group of ions is ejected of the first mass-to-charge ratio from the ion trap to the downstream mass spectrometer.

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