Obtaining and scintillation properties of crystals based on Eu²⁺ doped Ba(Br₀.₉Cl₀.₁)₂ solid solution

• Published in: Functional Materials
• Date: 2015
• Main Authors: Cherginets, V.L., Datsko, Yu.N., Grippa, A.Yu., Ponomarenko, T.V., Rebrova, N.V., Rebrova, T.P., Gorbacheva, T.E., Lopin, A.V., Trubaeva, O.G., Pedash, V.Yu.
• Format: Article
• Language: English
• Published: НТК «Інститут монокристалів» НАН України 2015
• Subjects: Characterization and properties
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/119617
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Obtaining and scintillation properties of crystals based on Eu²⁺ doped Ba(Br₀.₉Cl₀.₁)₂ solid solution / V.L. Cherginets, Yu.N. Datsko, A.Yu. Grippa, T.V. Ponomarenko, N.V. Rebrova, T.P. Rebrova, T.E. Gorbacheva, A.V. Lopin, O.G. Trubaeva, V.Yu. Pedash // Functional Materials. — 2015. — Т. 22, № 4. — С. 429-433. — Бібліогр.: 10 назв. — англ.

Scintillation crystals based on BaBr₂-BaCl₂ solid solution corresponding to minimal melting point in the phase diagram doped with Eu²⁺ (from 0.3 to 3 mol. %) were grown by Bridgman-Stockbarger method. The X-ray luminescence spectra of pure matrix of Ba(Br₀.₉Cl₀.₁)₂ composition includes wide emission band with the maximum which position is placed near 410 nm. The emission spectra of the Eu²⁺-activated materials contain narrow bands with the maxima at 411-413 nm. The absolute light yield of Ba(Br₀.₉Cl₀.₁)₂:Eu²⁺ material doped with 3 mol. % of the activator is ca. 32600 photons per MeV and the best energetic resolution is 9.5 %. The decay curve for the studied materials is described by one component with the time constant of 70 ns. Distribution coefficient of Eu²⁺ in the studied matrix is estimated as k = 0.72±0.05. All the obtained parameters are close to those of BaBr₂:Eu²⁺ single crystals obtained under similar conditions.