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 (Xâ¯=â¯Br, I) scintillators
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
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 (Xâ¯=â¯Br, I) and was further studied in the mixed-halide LaBr3âxIx. 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 662â¯keV. Performance of LaBr3âxIx: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
Journal: Journal of Crystal Growth - Volume 483, 1 February 2018, Pages 251-257
نویسندگان
Daniel Rutstrom, Robyn Collette, Luis Stand, Matthew Loyd, Yuntao Wu, Merry Koschan, Charles L. Melcher, Mariya Zhuravleva,