Ion-electron source with channel multiplier having a feedback re

Details Ion-electron source with channel multiplier having a feedback re Ion-electron source with channel multiplier having a feedback re

1979-08-13

1981-11-03

Demeo, Palmer C.

Electric lamp and discharge devices

With positive or negative ion acceleration

Supplying ionizable material

313103CM, 31323131, 3133631, H01J 4304, H01J 2702

Patent

active

042988179

ABSTRACT:
The ion-electron source described herein comprises an electron multiplier consisting of a straight tubular channel that includes an emitting region for the production of secondary electrons by ion impact, the channel being narrowed near one of its extremities; an inlet is provided by which gas at a predetermined pressure can be introduced in the channel multiplier; a sufficient voltage polarization allows the multiplier to operate in a self-sustained cascade mode; the source also includes an aperture by which ion current is ejected.

REFERENCES:
patent: 2258149 (1941-10-01), Schutze
patent: 3271661 (1966-09-01), Goodrich et al.
patent: 3612946 (1971-10-01), Toyoda
patent: 3673449 (1972-06-01), Eschard
"A Straight Channel Multiplier Used as a Low-Energy Ion Source," by R. D. Andresen and D. E. Page, Nuclear Instruments and Methods, vol. 88, No. 1, pp. 99-104 (1970), North-Holland Publishing Co.

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