X-Ray tube with low off-focal spot radiation

Details X-Ray tube with low off-focal spot radiation X-Ray tube with low off-focal spot radiation

1984-06-27

1986-02-25

Smith, Alfred E.

X-ray or gamma ray systems or devices

Source

Electron tube

378144, H01J 3510

Patent

active

045731853

ABSTRACT:
A tungsten focal track is placed on a graphite substrate in such a manner as to reduce off focal spot radiation while maintaining a fixed focal spot size. The radial width of the focal tract is made smaller than that of the electron beam from the cathode such that the electron beam overlap will allow for misalignments between the electron beam and the focal track without affecting the focal spot size or location.

REFERENCES:
patent: 3795832 (1974-03-01), Holland
patent: 4482837 (1984-11-01), Koizumi et al.

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