X-Ray tube having flashover prevention means

Details X-Ray tube having flashover prevention means X-Ray tube having flashover prevention means

1982-04-19

1985-02-12

Moore, David K.

X-ray or gamma ray systems or devices

Source

Electron tube

313313, H01J 3516

Patent

active

044995920

ABSTRACT:
In high-voltage vacuum-tubes, specifically X-ray tubes, comprising an electrode (anode) which carries a positive high voltage and which is connected to a conductive part (for example the metal tube envelope) via an insulator, flashover may occur at very high temperatures. In order to preclude such flashover a shielding electrode is arranged at a small distance from the insulator and has such a shape that the electric field strength at the location where the insulator is connected to the conductive part is reduced.

REFERENCES:
patent: 3728573 (1973-04-01), Roeber
patent: 4024424 (1977-05-01), Eggelesmann et al.
patent: 4205250 (1980-05-01), Ohara

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