H - Electricity – 01 – J
Patent
H - Electricity
01
J
313/27.1
H01J 35/08 (2006.01) H01J 35/18 (2006.01)
Patent
CA 1223916
ABSTRACT : X-ray tube comprising two successive layers of anode material. 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, whilst a further 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 radia- tion spectrum, the tube voltage is either adapted to the radiation and absorption properties of the anode material or can be switched over between several values. Upon the first layer a layer of for example beryllium can additionally be mounted.
454806
Diemer Willem H.
Kikkert John N.
Wagemans Hubertus F.m.
Fetherstonhaugh & Co.
N.v.philips'gloeilampenfabrieken
Panalytical B.v.
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