Ion trap mass analyzing apparatus

Details Ion trap mass analyzing apparatus Ion trap mass analyzing apparatus

2005-12-20

2005-12-20

Wells, Nikita (Department: 2881)

Radiant energy

Ionic separation or analysis

Cyclically varying ion selecting field means

C250S281000, C250S282000, C250S290000, C250S291000

Reexamination Certificate

active

06977373

ABSTRACT:
An ion-trap mass analyzing apparatus having means for generating ion-capture electric fields asymmetrical with respect to a reference plane containing a central point of a ring electrode and perpendicular to a central axis of the ring electrode in the inside of an ion trap to resonantly amplify ions rapidly to emit the ions from the ion trap in a short time to thereby permit high-sensitive high-accurate mass analysis stably regardless of the structural stability of ions as a subject of analysis.

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Maurizio Splendore, et al.,A New Ion Ejection Method Employing An Asymmetric Trapping Field to Improve The Mass Scanning Performance Of An Electrodynamic Ion Trap, International Journal of Mass Spectrometry 190/191(1999), pps. 129-143.
Lynn A. Gill, et al.,In Situ Optimization Of The Electrode Geometry Of The Quadrupple Ion Trap, International Journal of Mass Spectrometry 188 (1999), pps. 87-93.

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