掺Dy、Nd CaSO4烧结复合材料的研究

M. A. P. Chagas, L. Parente, D. Souza
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引用次数: 1

摘要

本工作的主要目的是发展烧结复合材料,以便使用简单的制备路线和高温使其用作热释光(TL)剂量计。用掺有Dy2O3和NdO3的CaSO4.2H2O制备复合材料。首先,CaSO4.2H2O在100°C的烘箱中脱水1小时。在添加掺杂剂和均质后,将聚乙烯醇(PVA)加入化合物中,使其更容易压实。制备了直径6 mm、厚度1 mm的微球,分别在900℃和1000℃下烧结6 h。用β源(90Sr + 90Y)辐照后,样品的TL发射曲线出现了两个峰。在校准过程中,发现TL响应与吸收剂量成正比。结果表明,该材料具有应用于剂量学的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Development of sintered composites of CaSO4 doped with Dy and Nd
The main purpose of this work is the development of sintered composites in order to allow their use as thermoluminescence (TL) dosimeters using a simple route to preparation and employing high temperature. The composites were prepared with CaSO4.2H2O doped with Dy2O3 and NdO3. Initially, CaSO4.2H2O was dehydrated in an oven at 100°C for 1 h. After addition of dopants and homogenisation, Polyvinyl Alcohol (PVA) was incorporated into the compounds to make their compaction easier. The pellets, 6 mm in diameter and 1 mm thick, were sintered at 900°C and 1000°C for 6 h. The TL emission curves showed two peaks when the samples were irradiated with a beta source (90Sr + 90Y). During calibration, TL responses were found to be proportional to the absorbed dose. The results showed that this material can potentially be used in dosimetry.
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