کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8249850 | 1533379 | 2018 | 24 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Characterization of Ce-doped lithium borosilicate glasses as tissue-equivalent phosphors for radiation measurements
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
تشعشع
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چکیده انگلیسی
We synthesized lithium borosilicate glasses doped with different concentrations of Ce (0.01%, 0.03%, 0.10%, and 0.30%) as well as undoped glass, and then the prepared glasses were studied for their optical, dosimetric, and scintillation properties. The Ce-doped samples exhibited scintillation and photoluminescence (PL) due to the 5d-4f transitions of Ce3+, with broad spectral features peaking around 350â¯nm. The PL and scintillation decay times were 30.7-31.6 ns and 64-82 ns, respectively. As the concentration of Ce increased, the scintillation intensity increased. Among the present samples, the 0.03% Ce-doped sample showed the highest PL quantum yield (9.7%). The quantum yield was well correlated with the decay time. In addition, thermally stimulated luminescence was observed after irradiation with X-rays. The sensitivity was highest for the 0.10% Ce-doped sample, having a dynamic range from 0.05â¯mGy to 10â¯Gy, which was equivalent to that of commercial dosimeters. Furthermore, the thermally stimulated luminescence spectrum was due to the 5d-4f transitions of Ce3+. The concentration of Ce that gave the highest sensitivity was 0.10%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Radiation Measurements - Volume 111, April 2018, Pages 13-18
Journal: Radiation Measurements - Volume 111, April 2018, Pages 13-18
نویسندگان
Yuya Isokawa, Shotaro Hirano, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida,