ICR ion trap
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United States of America Patent
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-
Jan 1, 1991
Grant Date -
N/A
app pub date -
Feb 21, 1990
filing date -
Jun 30, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An ICR ion trap comprises electrically conductive side plates (1) extending in parallel to one axis (Z), and electrically conductive end plates (5,6) extending perpendicularly to the said axis (Z). Additional electrode plates (8,9) are arranged at a certain spacing from the said end plates (5,6) and can be supplied with trapping potentials of a polarity opposite to the polarity of the potentials applied to the said end plates so that an outer space is defined in which electrodes of opposite sign are trapped. Following analysis and elimination of the ions contained in the inner space, the ions of opposite sign can be trapped in the inner space for subsequent analysis. The arrangement provides also the possibility to observe recombination reactions between ions of different signs.
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