X-ray apparatus with rotationally symmetric Gaussian-like focal

Details X-ray apparatus with rotationally symmetric Gaussian-like focal X-ray apparatus with rotationally symmetric Gaussian-like focal

1977-06-23

1978-01-31

Smith, Alfred E.

Radiant energy

Inspection of solids or liquids by charged particles

Analyte supports

250445R, G01N 2134, G01N 2304

Patent

active

040717682

ABSTRACT:
An X-ray apparatus provides rotationally symmetric, Gaussian-like focal spot distributions. The apparatus may be constituted by an X-ray tube having a glass envelope, a cathode in the form of a filament for providing thermionically emitted electrons and an anode. The anode is of conical shape and can be rotated. The cathode is arranged to be rotated about an axis perpendicular to the plane of the filament and passing through its central point. The apparatus may be constituted by a conventional X-ray tube which is rotatable about an axis coaxial with the central ray of the X-ray field which emerges from the tube. The apparatus may be constituted by a conventional X-ray tube, which is stationary, in combination with a mechanism which effects rotation of the X-ray image receptor and the object being to be examined about an axis coaxial with the central ray of the X-ray field.

REFERENCES:
patent: 3340396 (1967-09-01), Prickett et al.
patent: 3466439 (1969-09-01), Setala

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