Radiant energy – Ionic separation or analysis – Methods
Reexamination Certificate
2011-02-15
2011-02-15
Souw, Bernard E (Department: 2881)
Radiant energy
Ionic separation or analysis
Methods
C250S281000, C250S290000, C250S291000, C250S292000, C250S293000, C702S023000, C702S031000, C702S075000, C702S076000, C702S106000
Reexamination Certificate
active
07888633
ABSTRACT:
The invention relates to mass spectrometers in which ion clouds are stored in two spatial directions by radial forces while oscillating largely harmonically at a mass-specific frequency in a third spatial direction perpendicular to the other two, in a potential minimum, the shape of which is as close to a parabola as possible. Analysis of the oscillation frequencies of these ion clouds, preferably by a Fourier analysis, leads via a frequency spectrum to a mass spectrum. The frequency spectrum is analyzed to identify false signals in the frequency spectrum as harmonics and eliminating them where necessary.
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Franzen Jochen
Michelmann Karsten
Bruker Daltonik GmbH
Logie Michael J
O'Shea Getz P.C.
Souw Bernard E
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