کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8250191 | 1533384 | 2017 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Floating zone growth and scintillation properties of undoped and Ce-doped GdTaO4 crystals
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
تشعشع
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چکیده انگلیسی
Undoped and Ce-doped GdTaO4 single crystals with different Ce concentration were grown by the floating zone method. By X-ray diffraction analysis, we confirmed all the grown crystals do not have any impurity phases. In X-ray induced scintillation spectra, the undoped sample shows a broad emission band around 300-700Â nm, and the decay time of this emission is around 500Â ns In Ce-doped samples, emissions are observed around 400-700Â nm, and the decay time constants are around 50 ns which is a typical value of the 5d-4f transitions of Ce3+. In order to reveal the detailed scintillating behaviors, we measured the temperature dependence of X-ray induced scintillation spectra and revealed the energy transfer mechanisms between two different excited states of luminescent centers.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Radiation Measurements - Volume 106, November 2017, Pages 129-133
Journal: Radiation Measurements - Volume 106, November 2017, Pages 129-133
نویسندگان
D. Nakauchi, M. Koshimizu, G. Okada, T. Yanagida,