کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1487381 1510699 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Luminescence properties of Eu2+ doped SrB4O7 phosphor for radiation dosimetry
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Luminescence properties of Eu2+ doped SrB4O7 phosphor for radiation dosimetry
چکیده انگلیسی


• Report TL/OSL properties of SrB4O7:Eu2+ under beta irradiations.
• OSL Sensitivity was about 33% than that of commercially available α-Al2O3.
• TL glow peaks was appear at 305° C and TL sensitivity about 200 times higher than TLD-500.
• OSL decay pattern was faster than α- Al2O3:C and dose response was linear nature.

In this report, we presented the TL/OSL properties of Eu doped SrB4O7 phosphor under β-irradiation. This phosphor was synthesized by using solid state method. The phosphor shows OSL sensitivity about 33% than that of commercially available α-Al2O3: C phosphor. CW-OSL curve possess two components having photoionization cross-sections 0.707 × 10−17 and 18.58 × 10−17 cm2 respectively and TL sensitivity about 200 times higher than TLD-500. The kinetic parameters such as activation energy, frequency factor and order of kinetics of TL curve were calculated by using peak shape method. In TL/OSL mode dose-response was almost linear in the range of measurements. The MDD was found to be 1.26 mGy with 3σ of background. Also reusability studies showed the phosphor can be reused for 10 cycles with 1% change in the OSL output. The PL spectra of SrB4O7 showed emission in NUV region when excited with 318 nm under UV source.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Research Bulletin - Volume 76, April 2016, Pages 216–221
نویسندگان
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