Mass spectrometry apparatus

Details Mass spectrometry apparatus Mass spectrometry apparatus

1995-03-17

1997-05-27

Anderson, Bruce C.

Radiant energy

Ionic separation or analysis

With sample supply means

250281, B01D 5944, H01J 4900

Patent

active

056334966

ABSTRACT:
A mass spectrometry apparatus which includes an ion source which ionizes a sample under atmospheric pressure and outputs the ionized sample, a differential pumping region, provided with apertures, for receiving under vacuum ions in the ionized sample from the ion source and outputting the ions and an ion accelerating and focusing region, having a plurality of ion accelerating electrodes each having applied thereto a voltage, for accelerating and focusing under vacuum the ions from the differential pumping region. The ions from the accelerating and focusing region are introduced under vacuum to a mass spectrometer which detects and analyzes the ions.

REFERENCES:
patent: 4144451 (1979-03-01), Kambara
patent: 4888482 (1989-12-01), Kato
patent: 4963735 (1990-10-01), Okamoto et al.
patent: 5144127 (1992-09-01), Williams et al.
patent: 5148021 (1992-09-01), Okamoto et al.
patent: 5202562 (1993-04-01), Koga et al.
patent: 5352892 (1994-10-01), Mordehai et al.
patent: 5381008 (1995-01-01), Tanner et al.

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