Ionization cell for mass spectrometers

Details Ionization cell for mass spectrometers Ionization cell for mass spectrometers

1998-07-01

2000-08-29

Nguyen, Kiet T.

Radiant energy

Ionic separation or analysis

With sample supply means

250423R, 250427, H01J 4900

Patent

active

061112526

ABSTRACT:
A mass spectrometer ionization cell includes a micropoint type cold cathode which emits electrons, an amagnetic material anode forming an ionization cage positively biased relative to the cathode and including an entry slot for emitted electrons facing the cathode, and an ion collector electrode which is held at a potential lower than that of the cathode. The electrode is disposed laterally of and outside the space between the cathode and the anode and extends from the cathode to the anode. An axial magnetic field is generated in the cathode-anode direction.

REFERENCES:
patent: 3852595 (1974-12-01), Aberth
patent: 4272699 (1981-06-01), Faubel et al.
patent: 5541408 (1996-07-01), Sittler
Patent Abstracts of Japan, vol. 017, No. 608 (E-1457), Nov. 9, 1993 corresponding to JP 05 190148 A dated Jul. 30, 1993.

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