| 摘要 |
A sealed-off X-ray tube having a flat target surface facing an electron beam source and carried by a rigid support mounted for sliding reciprocally lateral motion against a sliding surface. A bellows is sealed vacuum tight to the target and to the wall of the tube opposite the sliding surface so that the target, the bellows, and the envelope of the tube form a closed surface. Conduits extend through the sliding surface to direct the flow of cooling fluid against the back surface of the target and carry the fluid away. The axis of the target reciprocates laterally in a direction perpendicular to the axis of the tube but the target does not rotate on its own axis. The target may be moved manually or by motor and with a linear, or circular motion. Because of the movement of the target, virtually constant X-ray beams radiate through windows of the tube and the effective life of the target is substantially increased.
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