Small divergence x-ray tube

Details Small divergence x-ray tube Small divergence x-ray tube

1979-01-18

1980-08-12

Demeo, Palmer C.

Electric lamp and discharge devices

With radioactive material

313 57, 313 60, H01J 3506, H01J 3510, H01J 3514

Patent

active

042175178

ABSTRACT:
An x-ray tube providing a flat, fan-shaped uniform x-ray beam.
The tube includes inside a vacuum glass envelope, a cathode or cathodes, a fixed or cylindrical rotating anode, and an anti-divergence diaphragm. The anti-divergence diaphragm has an opening, through which passes the beam. The walls of the opening have the shape of a sector of the fan-shaped beam in one plane (z-z'), and are flat in a perpendicular plane. A plurality of x-ray absorbing blades are positioned in the opening parallel to the fan-shaped side dividing the opening and the beam passing therethrough, thereby minimizing overall divergence of the beam. A plurality of cathodes may be used in the rotating anode tube, each separately focusable to provide beams of different intensity, and alternately operable.

REFERENCES:
patent: 1610863 (1926-12-01), Kucher
patent: 2677069 (1954-04-01), Bachman
patent: 3018398 (1962-01-01), Atlee
patent: 3435211 (1969-03-01), Softky
patent: 4057745 (1977-11-01), Albert

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