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Ceramic Materials

Masters Theses

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Scintillators

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Full-Text Articles in Engineering

Zone Refining Of Raw Materials For Metal Halide Scintillator Crystal Growth, Thomas Williams Mcalexander Dec 2014

Zone Refining Of Raw Materials For Metal Halide Scintillator Crystal Growth, Thomas Williams Mcalexander

Masters Theses

In recent years, scintillators have been researched for homeland security applications where properties such as high light output and low energy resolution are required for efficient gamma ray spectroscopy. Several promising scintillators, including SrI2 [Strontium Iodide], CsSrI3 [Cesium Strontium Iodide], and KSr2I5 [Potassium Strontium Iodide] are activated with EuI2 [Europium Iodide]. The quality of EuI2 raw material is generally poor and inconsistent as-received from the manufacturer. Material purity is known to affect its scintillation performance, and so purification processes have been investigated to improve the performance of Eu-doped [Europium-doped] scintillators. In this …


Spectroscopic, Thermal, And Physical Analysis Of The Raw Materials In Europium Doped Cesium Strontium Iodide Scintillator, Bonnie Dell Blalock Dec 2013

Spectroscopic, Thermal, And Physical Analysis Of The Raw Materials In Europium Doped Cesium Strontium Iodide Scintillator, Bonnie Dell Blalock

Masters Theses

Scintillators are widely used in homeland security applications that utilize gamma-ray spectroscopy. An ideal scintillator for this purpose should possess a high effective atomic number, high light yield, and good energy resolution. The scintillator CsSrI3: Eu [cesium strontium iodide: europium], recently developed at the Scintillation Materials Research Center, has excellent properties. Recent efforts have been made to evaluate the basic thermal properties and IR spectra of the compound’s raw materials as part of a project to improve the quality of grown crystals. Fourier transform infrared spectroscopy of high purity anhydrous CsI [cesium iodide], SrI2 [strontium iodide], and …