X-ray tube comprising two successive layers of anode material

Details X-ray tube comprising two successive layers of anode material X-ray tube comprising two successive layers of anode material

1984-05-23

1986-11-11

Church, Craig E.

X-ray or gamma ray systems or devices

Source

Target

378124, H01J 3508

Patent

active

046226885

ABSTRACT:
An anode of an X-ray tube, particularly for X-ray analysis, comprises at least two successive layers (7, 8 or 11, 10 or 13, 12) of anode material. A first layer (7, 11, 12) thereof consists mainly of an element having a comparatively low atomic number, such as scandium or chromium, while a second layer (8, 10, 13) consists mainly of an element having a comparatively high atomic number, such as molybdenum, tungsten or uranium. For the selection of a desired radiation spectrum, the tube voltage is selectively adjusted such that either or both layers are activated.

REFERENCES:
patent: 2506327 (1950-05-01), Harrington
patent: 3992633 (1976-11-01), Braun et al.
patent: 3999906 (1976-12-01), Funk et al.
patent: 4205251 (1980-05-01), Zwep

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