Method of detecting ions in an ion trap mass spectrometer

Details Method of detecting ions in an ion trap mass spectrometer Method of detecting ions in an ion trap mass spectrometer

1993-05-24

1994-02-08

Berman, Jack I.

Radiant energy

Ionic separation or analysis

Methods

250291, 250292, H01J 4942

Patent

active

052850633

ABSTRACT:
A method is disclosed for operating an ion trap mass spectrometer in such a way as to distinguish resonantly ejected ions from non-resonantly ejected ions. A supplementary AC field is superimposed on the three-dimensional quadrupole trapping field and the combined fields are scanned to resonantly eject ions of consecutive mass-to-charge ratio. The ejected ions are detected and the output signal of the resonantly ejected ions has a frequency component at the frequency of the supplementary AC field.

REFERENCES:
patent: 4540884 (1985-09-01), Stafford et al.
patent: 5089703 (1992-02-01), Schoen et al.

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