Radiant energy – With charged particle beam deflection or focussing – With target means
Patent
1974-10-24
1976-03-02
Church, Craig E.
Radiant energy
With charged particle beam deflection or focussing
With target means
313 60, H01J 3504
Patent
active
039420159
ABSTRACT:
A rotating anode for an X-ray tube is constructed with a broad rim on to which the radiation - exciting electron beam is focused from a direction perpendicular to the axis of rotation. In order to distribute the thermal loading over the surface of the rim a transverse scanning motion is applied to the electron beam. Viewing the source conventionally from a direction nearly parallel to the axis of rotation the scanning spot is required to appear stationary and this is achieved by forming the surface of the anode rim in a uniform pattern of transverse channels. The scanning waveform must conform generally to the cross-section of the channels and the frequency and phase of the scanning motion must bear a defined relationship to the rate of rotation of the channel pattern.
REFERENCES:
patent: 3149257 (1964-09-01), Wintermute
Church Craig E.
National Research Development Corporation
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