Add time:08/03/2019         Source:sciencedirect.com

In this work, potassium strontium bromide activated with divalent europium, (KSr2Br5:Eu) has been studied. It has a monoclinic crystal structure and a density of 3.98 g/cm3. Two single crystals of KSr2Br5 doped with 5% Eu2+, with diameters of 13 mm and 22 mm, were grown in a two zone transparent furnace via the Bridgman technique. The X-ray excited emission spectrum consisted of a single peak at ∼427 nm due to the 5d–4f transition in Eu2+. The measured light yield and energy resolution at 662 keV was 75,000 ph/MeV and 3.5%. At low energies KSr2Br5:Eu 5% also displays good energy resolution, 6.7% at 122 keV and 7.9% at 59.5 keV.

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