کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1680647 1518726 2012 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermoluminescence characteristics of the novel CaF2:Dy nanoparticles prepared by using the hydrothermal method
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سطوح، پوشش‌ها و فیلم‌ها
پیش نمایش صفحه اول مقاله
Thermoluminescence characteristics of the novel CaF2:Dy nanoparticles prepared by using the hydrothermal method
چکیده انگلیسی

Dysprosium doped calcium fluoride (CaF2:Dy) nanoparticles were produced for the first time by using the hydrothermal method. X-ray diffraction (XRD), scanning electron microscope (SEM) and energy dispersive spectrometer (EDS) patterns were utilized to characterize the synthesized material. The particle size of about 43 nm was evaluated from XRD data and supported by the SEM images. The Tm−Tstop and the computerized glow curve de-convolution (CGCD) methods were employed to determine the number of component glow peaks and kinetic parameters of the synthesized nanoparticles. Thermoluminescence glow curve of this phosphor exhibits six overlapping glow peaks. The optimized concentration of Dy impurity was found at 3 mol%. The prepared nanoparticles exhibit a roughly linear dose response to absorbed dose of 1000 Gy received from 60Co gamma source. This finding recommends this nanomaterial as a good candidate for high dose dosimetry. Other dosimetric features of this novel phosphor are also presented and discussed.


► CaF2:Dy nanoparticles were synthesized for the first time.
► This nanostructure exhibits proper thermoluminescence properties.
► It recommended as good candidate fo high dose dosimetry.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 291, 15 November 2012, Pages 65–72
نویسندگان
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