X-ray detector comprising an improved entrance window
AssigneeU.S. Philips Corporation
InventorJohannes J. De Koning
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Abstract
An inner side of a radiation entrance window in an X-ray detector is provided with an electrically conductive layer of gold, platinum, irridium or a mixture of these elements. Using such a layer, suitable electrical conductivity, a low radiation absorption for soft X-rays and a suitable mechanical stability can be achieved also in the case of a comparatively small layer thickness.
Claims15
An X-ray detector for analysis of elements having an atomic number lower than 6, comprising a gas-filled ionization chamber which is closed by a radiation entrance window having an electrically conductive material deposited on an inner side of the window in the form of a layer, which material is selected from the group consisting of Ir(77), Pt(78), and Au(79), or a mixture thereof.
An X-ray apparatus for analysis of elements having an atomic number lower than 12, comprising an X-ray source and an X-ray detector positioned to receive X-ray radiation from said source via an object under examination, said X-ray detector comprising a gas-filled ionization chamber which is closed by a radiation entrance window having an electrically conductive material deposited on an inner side of the window in the form of a layer, which material is selected from the group consisting of Ir(77), Pt(78), and Au(79), or a mixture thereof.
Dependencies are inferred from the claim text.