Binderless storage phosphor screen with needle shaped crystals
OwnerErich Hell, Manfred Fuchs +3inventors
InventorsErich Hell, Manfred Fuchs, Detlef Mattern, Bernhard Schmitt, Paul Leblans
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Abstract
A binderless storage phosphor screen with needle shaped crystals, wherein the phosphor is an alkalihalide phosphor and the needles show high [100] unit cell orientation in the plane of the screen.
Claims16
A binderless storage phosphor screen comprising an alkali metal storage phosphor characterised in that said screen shows an XRD-spectrum with a (100) diffraction line having an intensity I100 and a (110) diffraction line having an intensity I110, so that I100/I110≧1, when said XRD-spectrum is measured according to TEST A.
Method for producing a binderless storage phosphor screen comprising the steps of:
- providing an alkali metal storage phosphor
- vacuum depositing said phosphor on a substrate characterised in that during said step of vacuum depositing said substrate is kept at a temperature T, such that 50° C.≦T≦300° C. and said vacuum deposition proceeds ion an Ar-atmosphere with an Ar-pressure of at most 3 Pa.
Method for producing a binderless storage phosphor screen comprising the steps of:
- combining phosphor precursors for an alkali metal storage phosphor
- vacuum depositing said combination of phosphor precursors on a substrate characterised in that during said step of vacuum depositing said substrate is kept at a temperature T, such that 50° C.≦T≦300° C. and said vacuum deposition proceeds ion an Ar-atmosphere with an Ar-pressure of at most 3 Pa.
Dependencies are inferred from the claim text.