کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10128416 | 1645135 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Fabrication and characterization of a composite dosimeter based on natural alexandrite
ترجمه فارسی عنوان
ساخت و مشخص کردن یک دزیمتر کامپوزیت بر اساس اکساندریت طبیعی
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
چکیده انگلیسی
This work aims at demonstrating the fabrication of a new composite material based on the micron-sized powder of the alexandrite mineral (BeAl2O4:Cr3+) dispersed in a fluorinated polymer for OSL dosimetric applications. Composites with 50â¯wt% alexandrite powders were obtained and characterized in their chemical composition, mechanical, and luminescent properties. Energy dispersive X-ray spectroscopy mapping measurements of the pellets revealed a homogeneous distribution of alexandrite particles throughout the organic matrix. PL measurements showed the signal related to Cr3+ ions in alexandrite remained active besides all fabrication steps, and tensile tests showed the pellets to have good ductility and tensile strength. The OSL results showed the integrated intensity signal varied linearly with the beta irradiation dose and that the pellets were stable at room temperature over time of 28 days. Nevertheless, improvements in the fabrication process are necessary toward obtaining the same OSL intensity from different pellets.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optical Materials - Volume 85, November 2018, Pages 281-286
Journal: Optical Materials - Volume 85, November 2018, Pages 281-286
نویسندگان
Neilo Marcos Trindade, Anna Luiza Metidieri Cruz Malthez, Augusto de Castro Nascimento, Ronaldo Santos da Silva, Luiz Gustavo Jacobsohn, Elisabeth Mateus Yoshimura,