Ion trapping mass spectrometry apparatus

Details Ion trapping mass spectrometry apparatus Ion trapping mass spectrometry apparatus

1997-07-01

1998-07-21

Nguyen, Kiet T.

Radiant energy

Ionic separation or analysis

250292, H01J 4942

Patent

active

057838240

ABSTRACT:
A mass spectrometry apparatus having a constitution for attaining analysis with high sensitivity and high resolving power comprising a linear radio-frequency quadrupole ion trap and means for avoiding degradation of analysis performance due to field disturbance caused by an end electrode thereof, where said purpose is achieved by means for forming a harmonic potential in the central axis thereof in whose potential ions are resonantly oscillated to be ejected outside of the ion trap for detection along the axis, or by means to eliminate undesirably- degraded signals originating near the ion trap portions that are disturbed by the end electrodes.

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Journal of Applied Physics, vol. 40, No. 8, Jul. 1969, D.A. Church: Storage-Ring Ion Trap Derived from the Linear Quadrupole Radio-Frequency Mass Filter, pp. 3127-3134.
Physics Scripta, vol. T22, 1988, B.I. Deutch et al.: Antihydrogen Production by Positroniuym-Antiproton Collisions in an Ion Trap, pp. 248-255.
Plenum Press, New York & London, Miklos Szilagyi: Electron and Ion Optics, pp. 72-75 No Date.

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