Radiant energy – Ionic separation or analysis – Cyclically varying ion selecting field means
Patent
1992-05-12
1993-09-28
Berman, Jack I.
Radiant energy
Ionic separation or analysis
Cyclically varying ion selecting field means
250281, H01J 4926
Patent
active
052488837
ABSTRACT:
An ion confinement, i.e., trap, apparatus comprises electrically conductive members, including concentric, coplanar rings or parallel sheets separated by dielectric spacers disposed on the outer edges of the sheets, each of the sheets having a circular hole, the circular holes being symmetrically aligned substantially along a common axis. The trap apparatus further has means for applying an RF potential to the conductive members, such that the resulting electric field being generated in the space defined by the conductive members has a characteristic of a substantially quadrupole field. A charged particle, being injected into the space, is confined in the field, maintaining a dynamic equilibrium condition.
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Brewer Richard G.
Devoe Ralph G.
Foster Kenneth L.
Hoffnagle John A.
Kallenbach Reinald
Berman Jack I.
Beyer Jim
International Business Machines - Corporation
Lin Bo-In
Printner James C.
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