X-ray or gamma ray systems or devices – Source – Electron tube
Patent
1989-05-09
1990-04-24
Church, Craig E.
X-ray or gamma ray systems or devices
Source
Electron tube
378144, H01J 3526
Patent
active
049205510
ABSTRACT:
A rotating anode X-ray tube is provided which includes an anode disk having a central axis of rotation and a circumferential peripheral edge lying in a plane perpendicular to that axis of rotation. A ring-shaped target is mounted to the disk adjacent the peripheral edge and the disk includes a mechanism formed integrally solid with the disk and remote from the target for mounting the disk to a support shaft of a rotor within a vacuum housing to permit rotation of the disk about the axis of rotation of the disk. The disk is formed integrally solid along the aforementioned plane, including that portion of the disk coincident with the axis of rotation and the disk has a thickness which increases progressively in a radially inward direction from the peripheral edge, including that portion of the disk between the target and the mechanism for coupling, to counteract a radially inward increase in the disk upon high speed rotation of the disk. A cathode is provided for bombarding the target with thermions to generate X-rays which escape the vacuum housing through an appropriately placed X-ray penetrable window.
REFERENCES:
patent: 1893759 (1933-01-01), Bouwers
patent: 1902502 (1933-03-01), Hofmann
patent: 2250322 (1941-07-01), Atlee
patent: 3710162 (1973-01-01), Bougle
patent: 3878395 (1975-04-01), Siefert et al.
patent: 3942015 (1976-03-01), Huxley
patent: 4052640 (1977-10-01), Hueschen et al.
patent: 4071768 (1978-01-01), Goodenough
patent: 4679220 (1987-07-01), Ono
Takahara Kenichi
Takahashi Hiroshi
Church Craig E.
Freeman John C.
Kabushiki Kaisha Toshiba
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