Method and a device for furnishing an ion stream

Details Method and a device for furnishing an ion stream Method and a device for furnishing an ion stream

1982-08-02

1985-02-19

Anderson, Bruce C.

Radiant energy

Ion generation

Electron bombardment type

250423R, H01J 2700

Patent

active

045007870

ABSTRACT:
Method and device for furnishing an ion stream by causing gas to flow through a discharge aperture having a diameter of at most 20 .mu.m into an evacuated chamber and ionizing said gas by means of one or a plurality of focused electron beams downstream of said aperture in which the ionization is effected immediately downstream of said discharge aperture.

REFERENCES:
patent: 2938116 (1960-05-01), Benson et al.
patent: 2978580 (1961-04-01), Ardenne
patent: 3505518 (1970-04-01), Mitani
"Diagnostics of the Flowing Afterglow" by Fohsenfield, Int. Jour. of Mass Spectrometry and Ion Physics, 16, Nos. 1 and 2 (1975), pp. 151-166.
"High Luminosity Ion Source for Mass Spectrometers" by Sysoew et al., Soviet Physics-Tech. Physics, 23, No. 6, Jun. 1978, pp. 714-718.

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