Quadrupole ion trap mass spectrometer having two pulsed axial ex

Details Quadrupole ion trap mass spectrometer having two pulsed axial ex Quadrupole ion trap mass spectrometer having two pulsed axial ex

1991-01-25

1991-12-24

Berman, Jack I.

Radiant energy

Ionic separation or analysis

Cyclically varying ion selecting field means

250291, 250282, H01J 4942

Patent

active

050755471

ABSTRACT:
This invention relates generally to a quadrupole ion trap mass spectrometer and method of operation and more particularly to an ion trap mass spectrometer in which pulses of energy of predetermined frequencies are applied across the end caps to independently and sequentially excite ions of different masses trapped in the ion trap to perform parent scanning, neutral loss scanning and selected reaction monitoring.

REFERENCES:
patent: 4540884 (1985-09-01), Stafford et al.
patent: 4736101 (1988-04-01), Syka et al.

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