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Scintillation properties of K 2 LaCl 5 :Ce microcrystals embedded in KCl host
Author(s) -
Stryganyuk G.,
Savchyn P.,
Vistovskyy V.,
Voloshinovskii A.,
Antonyak O.,
Birowosuto M.,
Dorenbos P.
Publication year - 2009
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200824304
Subject(s) - scintillation , luminescence , excitation , scanning electron microscope , crystal (programming language) , materials science , analytical chemistry (journal) , crystallography , crystal structure , chemistry , optics , physics , optoelectronics , chromatography , quantum mechanics , detector , computer science , composite material , programming language
Scintillation properties under γ‐ray excitation and luminescence properties under X‐ray excitation of KCl with embedded K 2 LaCl 5 :Ce microphase crystals have been investigated. KCl–LaCl 3 (2 mol%)–CeCl 3 (0.1 mol% and 0.02 mol%) show scintillation yields of 15000–18000 photons/MeV with two decay time components of 300–420 ns and 1.2–1.9 µs. These properties compare with those of K 2 LaCl 5 :Ce bulk crystal. The luminescence study and scanning electron microscopy data indicate that the KCl–LaCl 3 –CeCl 3 system contains K 2 LaCl 5 :Ce microcrystals of 10–50 μm size. The decrease of the intensity contribution and decay times of the slow component in the scintillation pulse of microcrystals compared with those in K 2 LaCl 5 :Ce single crystals are discussed. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)