کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5438187 | 1398181 | 2017 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Scintillation and dosimeter properties of CaF2 transparent ceramic doped with Eu2+
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
We have developed CaF2 transparent ceramics doped with Eu2+(CaF2:Eu) by using spark plasma sintering (SPS), and investigated the scintillation, dosimeter and photoluminescence (PL) properties. Under X-ray irradiation, all the samples showed emission due to self-trapped excitons (STE) and 5d-4f transition of Eu2+ at 300 and 430 nm, respectively. In addition, weak emission due to the 4f-4f transitions of Eu3+ at 570, 590, 615 and 625 nm were also present in all the samples. Under 137Cs irradiation, the light yields of the 0.01, 0.02, 0.05 and 0.1 Eu-doped samples were estimated to be 16,400, 15,400, 17,700 and 14,300 photons/MeV, respectively. Thermally stimulated luminescence (TSL) glow curves of all the samples exhibited glow peaks at 100 and 180 °C, and these intensities increased linearity as a function of X-ray dose from 0.1 to 1000 mGy. Furthermore, the CaF2:Eu showed not only TSL but also optically stimulated luminescence (OSL).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 43, Issue 1, Part A, January 2017, Pages 604-609
Journal: Ceramics International - Volume 43, Issue 1, Part A, January 2017, Pages 604-609
نویسندگان
Fumiya Nakamura, Takumi Kato, Go Okada, Noriaki Kawaguchi, Kentaro Fukuda, Takayuki Yanagida,