High-flux x-ray response of composite mercuric iodide detectors

Michael M. Schieber; Asaf Zuck; Leonid Melekhov; Rubil Shatunovsky; Haim Hermon; Renato A. D. Turchetta

doi:10.1117/12.366594

19 October 1999 High-flux x-ray response of composite mercuric iodide detectors

Michael M. Schieber, Asaf Zuck, Leonid Melekhov, Rubil Shatunovsky, Haim Hermon, Renato A. D. Turchetta

Proceedings Volume 3768, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics; (1999) https://doi.org/10.1117/12.366594
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

A theological model is presented which analyses the sensitivity of composite detectors to a flux of x-rays emerging form a radiological x-ray generator. The model describes the many factor which influenced the x-ray response, for the case where the detector is composed of several layers of crystallites separated by a polymeric glue as is the case of composite HgI₂ detectors fabricated by the screen print method. The model also describes the variation of the sensitivity with grain size and dielectric constant, taking into account the dielectric constant of the binder showing also the experimental result. Finally, the experimental result of the sensitivity vs. the voltage is shown for single crystal and composite HgI₂ detectors and these results are compared with polycrystalline PbI₂ and a-Se, which are the main material candidates for medical digital radiology.

Citation Download Citation

Michael M. Schieber, Asaf Zuck, Leonid Melekhov, Rubil Shatunovsky, Haim Hermon, and Renato A. D. Turchetta "High-flux x-ray response of composite mercuric iodide detectors", Proc. SPIE 3768, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics, (19 October 1999); https://doi.org/10.1117/12.366594

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