Radiant energy – Ionic separation or analysis
Patent
1988-06-02
1989-07-25
Berman, Jack. I.
Radiant energy
Ionic separation or analysis
250282, H01J 4900
Patent
active
048516694
ABSTRACT:
A tandem mass spectrometer includes an ion source, a first mass analyzer, a microchannel collision plate, a second mass analyzer, and a detector. The microchannel collision plate comprises a matrix defining a plurality of microchannels which are disposed in a generally parallel orientation with a beam of parent ions emanating from the first mass analyzer. Collision of the parent ions with the internal surfaces of the microchannels causes the parent ions to dissociate into daughter ions. The second mass analyzer distinguishes between various mass fractions of the daughter ions, allowing the detector to quantitate said fractions and produce a mass spectra of the material being analyzed.
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Berman Jack. I.
The Regents of the University of California
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