منابع مشابه
How spectroscopic x-ray imaging benefits from inter-pixel communication.
Spectroscopic x-ray imaging based on pixellated semiconductor detectors can be sensitive to charge sharing and K-fluorescence, depending on the sensor material used, its thickness and the pixel pitch employed. As a consequence, spectroscopic resolution is partially lost. In this paper, we study a new detector ASIC, the Medipix3RX, that offers a novel feature called charge summing, which is esta...
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The electrical characteristics,charge collection eeciency and energy resolution of a GaAs detector made out of LEC material have been studied. A matrix of 36 square pixels was deposited on a 70 m thick crystal; each pixel had an area of 200x200 m 2 with 20 m spacing between adjacent pixels. This detector showed a charge collection eeciency uniformity among the pixels better than 88% when expose...
متن کاملBio-medical X-ray imaging with spectroscopic pixel detectors
The aim of this study is to review the clinical potential of spectroscopic X-ray detectors and to undertake a feasibility study using a novel detector in a clinical hospital setting. Detectors currently in development, such as Medipix-3, will have multiple energy thresholds allowing for routine use of spectroscopic bio-medical imaging. We have coined the term MARS (Medipix All Resolution System...
متن کاملComparison of the current of UV ray radiation on PIN Silicon photodiode and Gallium Arsenide
The high-energy UV ray radiation on PIN Silicon photodiodes reduces the optimal parameters of these photodiodes. In this paper, by representing a model, we compare the effect of UV dose on the bright current in these two types of photodiodes and confirm the analytic relationships in order to simulate a model with the help of the Silvaco- Atlas software. In this model, Silicon photodiodes and Ga...
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ژورنال
عنوان ژورنال: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
سال: 2002
ISSN: 0168-9002
DOI: 10.1016/s0168-9002(01)01714-4