Discharge-in-magnetic-field type ion generating apparatus

Details Discharge-in-magnetic-field type ion generating apparatus Discharge-in-magnetic-field type ion generating apparatus

1991-03-13

1992-09-22

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Discharge device load with fluent material supply to the...

Electron or ion source

250423R, 3133591, H01J 3300

Patent

active

051500108

ABSTRACT:
A crossed-field triode discharge type ion generating apparatus, containing a vacuum container, a magnetic field generating unit, a positive pole having a hollow part, a first negative pole, a second negative pole having an ion injecting hole, a control electrode, and a means of giving the highest electric potential among ones for all the electrodes to the positive pole and higher electric potential than ones for the first negative pole and the second negative pole to the control electrode, has at least either of the control electrode or the second negative pole constructed out of a cylinder possessing a through hole coaxial with the hollow part of the positive pole and a platelike part provided on one end of the cylinder, the cylinder being provided with a part made of at least one kind of metal belonging to a group of metals including vanadium, chrome, niobium, molybdenum, tantalum and tungsten and at least one of the control electrode, the first negative pole or the second negative pole being also provided with a part made of titanium.

REFERENCES:
patent: 4344019 (1982-08-01), Gavin et al.
patent: 4423355 (1983-12-01), Kageyama
patent: 4933551 (1990-06-01), Bernius et al.
patent: 5015920 (1991-05-01), Blanchard
Abstracts of the divisional meeting of the Physical Society of Japan, pt. 4, p. 109; K. Kageyama et al; Oct. 2, 1990.

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