X-ray tube with a backscattering electron trap
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United States of America Patent
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Dec 15, 2015
Grant Date -
Jul 5, 2012
app pub date -
Sep 29, 2010
filing date -
Sep 30, 2009
priority date (Note) -
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Abstract
An x-ray tube has a backscatter electron trap to prevent extra focal radiation caused by backscattered electrons from the focal spot from passing through the beam exit window to an exterior of the x-ray tube. The backscatter electron trap has a surface that faces the x-ray beam in the x-ray tube. No portion of that surface is visible both from an arbitrary point in the x-ray beam outside of the x-ray tube and from an arbitrary point at the focal spot.
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