Ion trap mass spectrometer
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United States of America Patent
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Sep 19, 2017
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app pub date -
Jul 13, 2015
filing date -
Jan 15, 2010
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Abstract
A novel MS-MS apparatus utilizing electrostatic traps is disclosed, along with an associated method of analysis. The apparatus may include a chromatograph, an ion source, a first mass spectrometer, a fragmentation cell, an ion guide, a pulsed converter, and a Z-directional elongated electrostatic trap. The electrostatic trap, which may be Z-elongated into a cylindrical electrostatic trap, includes at least one of an image current detector and a time-of-flight detector. The pulsed converter is Z-directionally elongated to match the electrostatic trap. Ion selection from electrostatic traps may be accomplished with an electrode that ejects ion from an oscillation space to a time-of-flight detector, a fragmentation surface, or a passage between E-trap regions.
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