The University of Connecticut Health Center and Xicon Technologies, LLC have been developing a high speed/high resolution x-ray detector called the XEBIT -ray sensitive 1ectron eam Image Tube). The XEBIT is a direct conversion image detector that uses Thallium Bromide as the x-ray photoconductor. Thallium bromide is a high Z material with a linear attenuation coefficient of 28. 1 1 cuf' at 60 keV. This high stopping power results in a quantum efficiency in excess of 50% at 60 keV for 300 micron thick layers. The XEBIT has far superior contrast resolution with over 50 percent modulation at 5 linepairs per millimeter and does not suffer from veiling glare. This paper is a report on the works in progress ofthe XEBIT development, which is near clinical trials.
Large-size CZT single crystals of up to 300 cm 3 have been grown at Yinnel Tech. These crystals were produced into radiation detectors with excellent performances, leading to enhancements in both energy resolution and detector efficiency.
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