X-ray tube system

Details X-ray tube system X-ray tube system

1987-08-24

1989-04-18

Church, Craig E.

X-ray or gamma ray systems or devices

Source

Electron tube

378138, 378113, 378114, 378115, H01J 3506

Patent

active

048233714

ABSTRACT:
An x-ray tube contains a plurality of filaments each with an associated focus cup control to allow it to change rapidly between discrete emission intensities. The cathode structure of the x-ray tube is constructed so that each filament is located in a separate focus cup structure. However, the focus cup structures are electrically isolated so that a separate bias potential can be applied to each focus cup structure. By separately biasing each focus cup structure, the emission from each of the filaments can be controlled independently.

REFERENCES:
patent: 3103591 (1963-09-01), Rogers et al.
patent: 3389253 (1968-06-01), Kok
patent: 3946261 (1976-03-01), Holland et al.
patent: 4065689 (1977-12-01), Pleil
patent: 4287420 (1981-09-01), Yamamura et al.
patent: 4340816 (1982-07-01), Schott

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