Method and apparatus for charged particle collection, conversion, fragmentation or detection
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United States of America Patent
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Nov 7, 1995
Grant Date -
N/A
app pub date -
Dec 14, 1993
filing date -
Dec 14, 1993
priority date (Note) -
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Abstract
An apparatus and method for providing mass-selected particles. A mass filter adapted to receive a flux of particles at its entry emits a mass-selected subset of the received flux of particles at its exit, and an electrode configuration provides electric fields for deflecting at least some of the mass-selected subset of particles thus emitted across a substantially open spatial region through substantially 180 degrees of arc. The deflected particles can be collected, converted, fragmented, or detected. The apparatus and method are suitable for use with a multipole (e.g., quadrupole) mass filter, and the electrode configuration can easily be retrofitted to existing installed multipole mass spectrometers as well as adapted to newly manufactured designs.
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