The electrical characteristics, charge collection efficiency 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 mu m thick crystal; each pixel had an area of 200 X 200 mu m(2) with 20 mu m spacing between adjacent pixels. This detector showed a charge collection efficiency uniformity among the pixels better than 88% when exposed to 60 keV photons, which ensures that a comfortable common threshold setting can be adopted without affecting the uniformity of the measurement. It was successful in recording (60 keV photon energy) the image of a wolframium slab, 100 mu m thick. RI Cola, Adriano/G-2379-2010

X-RAY-IMAGING USING A PIXEL GAAS DETECTOR

BISOGNI, MARIA GIUSEPPINA;FANTACCI, MARIA EVELINA;ROSSO, VALERIA;
1995-01-01

Abstract

The electrical characteristics, charge collection efficiency 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 mu m thick crystal; each pixel had an area of 200 X 200 mu m(2) with 20 mu m spacing between adjacent pixels. This detector showed a charge collection efficiency uniformity among the pixels better than 88% when exposed to 60 keV photons, which ensures that a comfortable common threshold setting can be adopted without affecting the uniformity of the measurement. It was successful in recording (60 keV photon energy) the image of a wolframium slab, 100 mu m thick. RI Cola, Adriano/G-2379-2010
1995
Bertolucci, E; Bisogni, MARIA GIUSEPPINA; Bottigli, U; Cola, A; Fantacci, MARIA EVELINA; Rosso, Valeria; Stefanini, A; Vasanelli, L.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/26538
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