X-RAY-IMAGING PERFORMANCES OF A 2D HYBRID CADMIUM TELLURIDE STRUCTURE

A 2D imaging structure, using chlorine doped cadmium telluride connect ed to a read-out circuit by indium bumps, was characterized with a 70 kV dental X-ray tube. The imaging capabilities of such a structure wit h an experimental device of 100 mu m pitch are presented. The theoreti cal resolution limit, due to K escape photons and photoelectrons, was computed by a Monte Carlo code simulation for 100 and 50 mu m pixels. Experimental measurements of dynamic range, linearity, line spread fun ction, signal to noise ratio and modulation transfer function are real ized.