LuAP/LuYAP single crystals for PET scanners: effects of composition and growth historyстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:In this paper we present results of optical and scintillation studies of three series of LuAP and LuYAP crystals differing in yttrium and cerium concentrations. Comparison of as-grown and UV-irradiated crystals has revealed two types of color centers located at 200-240 nm and 250-320 nm and giving rise to underlying absorption. The percentage of light emitted at 1 ?s increases from 76% in LuYAP (Lu80%) to 85% in LuAP but is dependent on Ce concentration too. The light output for the best LuYAP and LuAP specimens of 2?2?10 mm3 measured in the vertical geometry was 50% of LSO and 35% of LSO respectively.