کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8251052 1533436 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A thermoluminescence study of mineral silicates extracted from herbs in the dose range 0.5-5 Gy
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم تشعشع
پیش نمایش صفحه اول مقاله
A thermoluminescence study of mineral silicates extracted from herbs in the dose range 0.5-5 Gy
چکیده انگلیسی
The presence of silicates in many personal objects suggests their potential use at low dose as fortuitous dosimeter in an accidental radiological exposure, when conventional dosimetry is not available. The goal of the present work is the dosimetric characterization of mineral silicates extracted from the plant Hibiscus Sabdariffa L, known as Jamaica flower, in the dose range 0.5-5 Gy. By studying the radiation-induced signal in time, the temperature integration region between 210 °C and 250 °C was found to be the most stable and also reduced the effects of thermal fading in the dose reconstruction process; the dose response curve was linear between 0.5 Gy and 5 Gy. By checking the change in sensitivity after repeated exposures to ionizing radiations and to high temperature heating, no variation in the glow curve shape or peak intensities were detected. To eliminate a pre-existing background signal, all the characterization measurements were performed with aliquots “annealed” by a preliminary readout of the TL.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Radiation Measurements - Volumes 53–54, June–July 2013, Pages 74-79
نویسندگان
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