Characteristics of position sensitive detector pixels based on promising inorganic scintillators LaBr3 :Ce и CeBr3статья
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Дата последнего поиска статьи во внешних источниках: 17 мая 2016 г.
Аннотация:The energy resolution of different geometry LaBr 3 :Ce and CeBr 3 scintillation crystals grown bythe Institute of Solid State Physics (Russian Academy of Sciences) by the order of the Skobel’tsyn Instituteof Nuclear Physics (Moscow State University) was measured. The measurements were taken at energies ofdetected γ rays ranging from 20 keV to ~5 MeV. The samples under investigation were shaped as cylinders witha diameter of 0.5 cm and heights of 1.5 and 3.0 cm. The positional resolution along the crystal axis was also investigated for the CeBr 3 crystals by measuring the amplitudes of the scintillation signals from the opposite crystal ends. It was shown that the ratio of these amplitudes was dependent on the distance from a crystal end surface to the interaction point of a γ quantum inside the detector according to the linear law. The positional resolution along the crystal length appeared to be comparable to the crystal diameter. The results of the study suggest that CeBr 3 crystals have a great potential as position sensitive elements of space sensitive detectors for high energy charge particles and γ rays.