Quadrupole ion trap with switchable multipole fractions

Details Quadrupole ion trap with switchable multipole fractions Quadrupole ion trap with switchable multipole fractions

1997-11-20

2000-10-10

Nguyen, Kiet T.

Radiant energy

Ionic separation or analysis

Cyclically varying ion selecting field means

250282, 250291, H01J 4942

Patent

active

RE0369063

ABSTRACT:
An ion trap is provided in which higher multipole field fractions can be switched on and off and, in addition, can be electrically tuned. Specifically, the electrodes of an ideally shaped ion trap are divided into rotationally symmetrical component electrodes positioned facing the interior of the ion trap on a hyperboloidal surface with rotationally symmetry.

REFERENCES:
patent: 3555273 (1971-01-01), Arnold
patent: 4882484 (1989-11-01), Franzen et al.
patent: 4975577 (1990-12-01), Franzen et al.
patent: 5028777 (1991-07-01), Franzen et al.
patent: 5170054 (1992-12-01), Franzen
patent: 5298746 (1994-03-01), Franzen et al.
patent: 5386113 (1995-01-01), Franzen et al.
J. Franzen; Simulation Study of an Ion Cage with Superimposed Multipole Fields; International Journal of Mass Spectrometry and Ion Processes, 106 (1991) 63-78.

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