Radiant energy – Ionic separation or analysis – Cyclically varying ion selecting field means
Reexamination Certificate
2006-01-30
2008-07-29
Berman, Jack I. (Department: 2881)
Radiant energy
Ionic separation or analysis
Cyclically varying ion selecting field means
C250S293000, C250S290000, C250S282000, C250S281000, C250S3960ML
Reexamination Certificate
active
07405399
ABSTRACT:
Methods for applying an RF field in a two-dimensional electrode structure include applying RF voltages to main electrodes and to compensation electrodes. The voltages on the compensation electrodes may be proportional to the voltages on the main electrodes so as to optimize the RF field for processes involving ion excitation, including collision-induced dissociation. Electrode structures may include main trapping electrodes, one or more compensation electrodes, one or more ion exit apertures, and a device or circuitry for applying the various desired voltages.
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Berman Jack I.
Fishman Bella
Gloekler David P.
Logie Michael J
Varian Inc.
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