Radiant energy – Ionic separation or analysis – Cyclically varying ion selecting field means
Reexamination Certificate
2011-01-18
2011-01-18
Nguyen, Kiet T (Department: 2881)
Radiant energy
Ionic separation or analysis
Cyclically varying ion selecting field means
C250S290000, C250S3960ML
Reexamination Certificate
active
07872229
ABSTRACT:
In a three-dimensional Paul RF ion trap at least one of the ring electrode and end cap electrodes is structured to produce a high capture efficiency for analyte ions introduced into the trap. The electrode structuring may be produced by an electrode surface profile having edges or protrusions, resulting in a scattering reflection of the introduced ions. Alternatively, at least one electrode may be formed by physically separate electrode components. In one embodiment, the trap can be switched between operating as a linear ion trap with good capture efficiency and operating as a three-dimensional ion trap with good ion reaction conditions.
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Franzen Jochen
Park Melvin A.
Schubert Michael
Bruker Daltonik GmbH
Law Offices of Paul E. Kudirka
Nguyen Kiet T
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