کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8149069 1524346 2018 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Investigating new activators for small-bandgap LaX3 (X = Br, I) scintillators
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Investigating new activators for small-bandgap LaX3 (X = Br, I) scintillators
چکیده انگلیسی
Luminescence and scintillation properties of Bi3+, Sb3+, and Eu2+-doped LaI3 and LaBr3 were explored. Out of the three dopants investigated, Eu2+ was the most promising new activator for small-bandgap LaX3 (X = Br, I) and was further studied in the mixed-halide LaBr3−xIx. Crystals were grown from the melt using the vertical Bridgman method. LaBr3:Eu2+ 0.5% (mol) had the most favorable scintillation properties with a light output of 43,000 ph/MeV and 6% energy resolution at 662 keV. Performance of LaBr3−xIx:Eu2+ worsened for most samples as iodide concentration was increased. Room-temperature scintillation of LaI3:Eu2+ 0.1% and 0.5% was observed and is the first case of room-temperature emission reported for doped LaI3.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Crystal Growth - Volume 483, 1 February 2018, Pages 251-257
نویسندگان
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