Electric lamp and discharge devices – With radioactive material
Patent
1978-04-13
1980-04-01
Mullins, James B.
Electric lamp and discharge devices
With radioactive material
313555, H01J 3514
Patent
active
041963679
ABSTRACT:
Disclosed is an X-ray tube for fluorescence analysis having an exit aperture which is closed by a window of non-uniform thickness. A thicker window portion is located at the side of the aperture remote from the anode and partly overlaps a thinner window plate. In an analysis apparatus, the thicker window portion is located in a portion of the window through which passes the radiation traversing a comparatively small distance between the anode and the specimen.
REFERENCES:
patent: 2407857 (1946-09-01), Verhoeff
patent: 3835341 (1974-09-01), Zingaro
patent: 3892989 (1975-07-01), Gralenski et al.
Diemer Willem H.
Zwep Gerrit
Hostetter Darwin R.
Mullins James B.
Tamoshunas Algy
U.S. Philips Corporation
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