Radiant energy – Ionic separation or analysis – Cyclically varying ion selecting field means
Reexamination Certificate
2006-04-25
2006-04-25
Berman, Jack I. (Department: 2881)
Radiant energy
Ionic separation or analysis
Cyclically varying ion selecting field means
Reexamination Certificate
active
07034294
ABSTRACT:
A three section linear or two-dimensional (2D) quadrupole ion trap as a high performance mass spectrometer is described. Mass analysis is performed by ejecting ions radically out slots formed in at least two of the rods using the mass selective instability mode of operation. The slot geometry is optimized to enable ions of different mass ranges to be scanned out of differently dimensioned slots. Multiple detectors arranged to receive ejected ions in multiple directions provide the ability to simultaneously or sequentially scan or perform mass analysis of ions of different natures.
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Kovtoun Viatcheslav V.
Schwartz Jae C.
Senko Michael W.
Berman Jack I.
Thermo Finnigan LLC
Upham Sharon
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