Efficient detection for ion traps

Details Efficient detection for ion traps Efficient detection for ion traps

2006-05-05

2008-11-25

Berman, Jack I (Department: 2881)

Radiant energy

Ionic separation or analysis

Cyclically varying ion selecting field means

C250S281000, C250S282000

Reexamination Certificate

active

07456398

ABSTRACT:
An apparatus and method are disclosed for efficient detection of ions ejected from a quadrupolar ion trap, in which the ions are ejected as first and second groups of ions having different directions. The first and second groups of ions are received by a conversion dynode structure, which responsively emits secondary particles that are directed to a shared detector, such as an electron multiplier. The conversion dynode structure may be implemented as a common dynode or as two dynodes (or sets of dynodes), with each dynode positioned to receive one of the groups of ions.

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