Ion trap with built-in field-modifying electrodes and method...

Details Ion trap with built-in field-modifying electrodes and method... Ion trap with built-in field-modifying electrodes and method...

2007-10-09

2007-10-09

Berman, Jack I. (Department: 2881)

Radiant energy

Ionic separation or analysis

Cyclically varying ion selecting field means

Reexamination Certificate

active

11157906

ABSTRACT:
An apparatus and method for correcting deviations in a quadrupole field in a quadrupole ion trap is provided. More specifically the invention provides for correction electrodes positioned in at least one primary quadrupole electrode and a method of using the correction electrodes to provide a field correction potential.

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patent: 5468958 (1995-11-01), Franzen et al.
patent: 5650617 (1997-07-01), Mordehai
patent: 6087658 (2000-07-01), Kawato
patent: 6157030 (2000-12-01), Sakairi et al.
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patent: 6608303 (2003-08-01), Amy et al.
patent: 6911651 (2005-06-01), Senko et al.
patent: 7019289 (2006-03-01), Wang
patent: 2005/0061966 (2005-03-01), Ding et al.

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