High duty-cycle x-ray tube

Details High duty-cycle x-ray tube High duty-cycle x-ray tube

1991-02-01

1992-04-14

Church, Craig E.

X-ray or gamma ray systems or devices

Source

Electron tube

378137, 378138, H01J 3510

Patent

active

051054566

ABSTRACT:
A rotating x-ray tube includes an electron-beam accelerator assembly having an indirectly heated cathode structure. The cathode structure includes an electron-emitting region mounted at the center of a rotationally symmetric Pierce-cathode configuration. An electron beam travels along a selected path as the tube rotates so that the electron beam strikes selected portions of a target mounted within the tube as it rotates. Two magnetic coils and a ferromagnetic mirror plate are arranged to function as a single quadrupole electromagnet, which has its axis parallel to and offset from the electron beam and which elongates the electron beam in a radial direction.

REFERENCES:
patent: 2209963 (1940-08-01), DuMond
patent: 2493606 (1950-01-01), Waterton
patent: 4788705 (1988-11-01), Anderson

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