Patent ID: 7854961
Filing Date: 2010-12-21
Classification: C09K,G01T,G21K

Abstract:
1. A method for fabricating a scintillation material, the method comprising the steps of: providing a substrate; maintaining the substrate at a first temperature; providing a source of an alkali halide host material; maintaining the source of the alkali halide host material at about a second pre-selected temperature; providing a source of a first dopant capable of acting as a scintillation activator in the host material; maintaining the source of the first dopant at about a third pre-selected temperature different from at least said second temperature; providing a source of a second dopant comprising a lanthanide series cation; maintaining the source of the second dopant at about a fourth pre-selected temperature different from at least said second temperature; and vapor depositing the host material, the first dopant and the second dopant onto the substrate; the providing of the second dopant resulting in the scintillation material having substantially reduced afterglow; whereby, when said alkali halide being cesium iodide, said first dopant being thallium and said second dopant being an Europium cation, the providing of the second dopant results in the scintillation material having light output that at substantially 2 msec from peak light output is suppressed by at least a factor 5 from the light output of cesium iodide having thallium as a single dopant material; thereby forming the scintillation material in a microcolumnar structure on the substrate.