Photosensors for PET scanner on the base of BaF2 crystals

Многотипность Цериевых Центров В Оптических Нанокерамиках На Основе ВаF_2-СеF-=sub=-3-=/Sub=-

“…Эти кристаллы широко применяются в качестве сцинтилляционных кристаллов в детекторах γизлучения благодаря высокой плотности (4.89 g/sm 3 ) и наличию свечения при 195 и 220 nm с очень коротким временем затухания, равным приблизительно 800 ps (полоса кросс-люминесценция (КЛ)). Среди фторидных соединений нелегированные кристаллы BaF 2 известны как самые быстрые сцинтилляторы со временем распада 0.6 ns и эмиссионной составляющей 220 nm [1,2]. Однако интегральная интенсивность быстрого компонента невелика.…”

Fabrication and properties of transparent Nd‐doped BaF2 ceramics

“…Among the fluoride compounds, BaF 2 crystals are known as the fastest scintillator, with a decay time of 0.6 ns for its 220 nm emission component . BaF 2 also exhibits many other favorable physical properties; including non‐hygroscopic nature, relative ease of machining and polishing, and relatively low raw materials cost .…”

“…Among the fluoride compounds, BaF 2 crystals are known as the fastest scintillator, with a decay time of 0.6 ns for its 220 nm emission component . BaF 2 also exhibits many other favorable physical properties; including non‐hygroscopic nature, relative ease of machining and polishing, and relatively low raw materials cost . In addition, BaF 2 has a higher density (4.89 g/cm 3 ), melting point (1386°C) and thermal conductivity (11.72/Wm/K at 286 K) than CaF 2 , which is likely the next most‐investigated alkaline‐earth fluoride material.…”

Luminescence and scintillation properties of BaF2Ce transparent ceramic

“…BaF2 single crystal exhibits two emission bands. Fast component is in the UV region around 195-220 nm with the decay time of 600-800 ps and a relatively slow self-trapped excitons (STE) emission peaking at 310 nm with the decay time of 630 ns [13][14][15]. To detect the fast component it is necessary to use a photomultiplier tube with quartz entrance window.…”