journal article·2012-06

Analysis of a focus shift during the operation of an X-ray unit

A. M. Stein

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Abstract

A focus shift during the operation of an X-ray unit is described. It is demonstrated that the focus motion could be related to thermal variations in the sizes of the unit’s elements and the X-ray tube. The key role in this process is played by extension of the tube’s anode rod. The focus shift was found to have two components, namely, a slow and a fast one. The fast component depends on the velocity of the heating of the anode; the slow one depends on an increase in oil temperature. It was experimentally proven that variations in the anode current and voltage do not directly affect the focus position.
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Research context

OpenAlex topics: Advanced X-ray Imaging Techniques · Crystallography and Radiation Phenomena · Advanced X-ray and CT Imaging

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References (7)

Show source-provided references
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