Apparatus and particularly duoplasmatron usable for ionizing a g

Details Apparatus and particularly duoplasmatron usable for ionizing a g Apparatus and particularly duoplasmatron usable for ionizing a g

1987-03-25

1988-06-21

Paschall, M. H.

Electric heating

Metal heating

By arc

219121PW, 219121PM, 313581, 313162, 315344, B23K 900

Patent

active

047526670

ABSTRACT:
The invention relates to an apparatus usable for ionizing a gas comprising a cathode serving as a hot or cold cathode and to a process for using this apparatus. The apparatus includes a facing cathode and anode, the gas to be ionized successively traversing the cathode and the anode. The apparatus is characterized in that the cathode is formed by a first and second cylindrical half-electrode in face-to-face relation, the gas to be ionized passing between the half-electrode and a conductive filament connected by a first end to the first half-electrode and by a second end to the second half-electrode and located between the half-electrodes. The invention applied to all apparatuses used for ionizing a gas, such as electric arcs, unoplasmatrons and duoplasmatrons.

REFERENCES:
patent: 3164739 (1965-01-01), Werner
patent: 3513351 (1970-05-01), Kelly
patent: 3705998 (1972-12-01), Jennings et al.
patent: 4596945 (1986-06-01), Schumacher et al.
patent: 4659899 (1987-04-01), Welkie et al.
Instrument and Experimental Techniques; vol. 27, No. 1: A. L. Pivovarov et al.: "A Duoplasmatron Containing a Wien Filter for Examining the Surfaces of Solids".

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