کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5439329 | 1398194 | 2016 | 22 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thermoluminescence response of 120 MeV Ag9+ and γ-ray exposed LiMgBO3:Dy3+ nanophosphors for dosimetry
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Thermoluminescence(TL) response of LiMgBO3:Dy3+ nanophosphor synthesized by combustion method was examined using γ-ray and 120 MeV Ag9+ swift heavy ion (SHI) irradiation. The LiMgBO3:Dy3+ samples were exposed to 0.01 kGy â5 kGy γ-rays while for the different fluences the samples were irradiated with 120 MeV Ag9+ SHI over the range 1Ã1011 ions cmâ2 to 1Ã1013 ions cmâ2. The prominent TL glow curve peaks appeared at 396 K and 390 K for the γ-ray and 120 MeV Ag9+ SHI irradiated samples. The glow curves for the SHI iradiated samples were more complex than those of the γ-ray exposed samples. The effect of different heating rates on the TL response was also determined. The trapping parameters (i.e. activation energy, frequency factor, order of kinetic) of all the individual peaks of the glow curves have been analysed by using Chen's formulae. The TL response curve against γ-ray exposure illustrated a good linear response upto 3 kGy and after that the response was sublinear. For the 120 MeV Ag9+ ion irradiated samples, the material exhibited a sublinear dependence against ion irradiation for the studied fluence. The good TL response against γ-ray irradiation suggested that the material can be explored for a possible application in dosimetry.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 42, Issue 16, December 2016, Pages 18529-18535
Journal: Ceramics International - Volume 42, Issue 16, December 2016, Pages 18529-18535
نویسندگان
A.K. Bedyal, Vinay Kumar, O.M. Ntwaeaborwa, H.C. Swart,