X-ray tube with a reduced working distance

Details X-ray tube with a reduced working distance X-ray tube with a reduced working distance

1993-01-25

1994-09-06

Porta, David P.

X-ray or gamma ray systems or devices

Source

Electron tube

378136, 378138, H01J 3530

Patent

active

053454936

ABSTRACT:
In an X-ray tube for an X-ray analysis apparatus an optimized minimum working distance is achieved, together with an adequately high radiation yield, by integrated optimization of the radiation end of the tube, the position and the mounting of the exit window, and the electron-optical configuration in the tube. This results in an X-ray tube having a conical end, an angle of cone of approximately 45.degree. and the use of the cone as such in the electron-optical system of the tube. Exact determination of the anode position relative to a reference face outside the tube enables exact positioning of each individual tube in an analysis apparatus.

REFERENCES:
patent: 2482275 (1949-09-01), Horsley
patent: 2679017 (1954-05-01), Rogers et al.
patent: 3668454 (1972-06-01), Shimura
patent: 4229657 (1988-10-01), Bensussan et al.
patent: 4969173 (1990-11-01), Valkonet

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