Environmentally safe high density lanthanum doped glasses for radiation shielding windows

IF 3.5 3区 材料科学 Q1 MATERIALS SCIENCE, CERAMICS
Anchal Pathania , Neetu Verma , Rohit Mehra , P. Nandi , Gopi Sharma , Sandeep Kaur , Richa Mishra , B. Sanyal
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Abstract

In this present work, a series of lead-free xLa2O3–30xBi2O3-(100-x)B2O3, where x = 0, 3, 6, and 9 mol % glass systems have been studied for Radiation Shielding Windows (RSWs) applications. The prepared glass shows high densities from 5.05 to 5.46 g/cc which is an important aspect for RSW. The Vicker's hardness and UV–Vis spectroscopy performed before and after irradiation shows that 6 mol % of lanthanum is most stable composition for radiation shielding after exposure to gamma radiation of 1 kGy. The radiation-induced absorption coefficients at different visible wavelengths are determined using transmission data after the irradiation dose. The glass with 6 mol % doping of La2O3 has the least radiation-induced absorption coefficient among all prepared glass samples. The structural modifications have been confirmed with the help of Raman spectroscopy. The obtained results suggest that La2O3 doping enhances the radiation stability of glass samples. Therefore, the developed lanthanum-doped bismuth-borate glass could find its application as lead-free RSW glass as an alternative to high lead-containing glass.
环境安全的高密度掺杂镧辐射屏蔽窗玻璃
在目前的工作中,研究了一系列无铅xLa2O3-30xBi2O3 -(100-x)B2O3,其中x = 0,3,6和9 mol %的玻璃系统用于辐射屏蔽窗(RSWs)的应用。制备的玻璃显示出5.05 ~ 5.46 g/cc的高密度,这是RSW的一个重要方面。辐照前后的维氏硬度和紫外可见光谱分析表明,6mol %的镧在1 kGy的γ射线照射后是最稳定的辐射屏蔽成分。利用辐照剂量后的透射数据确定了不同可见波长处的辐射诱导吸收系数。在所有制备的玻璃样品中,La2O3掺杂6 mol %的玻璃具有最小的辐射诱导吸收系数。用拉曼光谱分析证实了结构修饰。结果表明,La2O3的掺杂提高了玻璃样品的辐射稳定性。因此,开发的掺镧硼酸铋玻璃可以作为无铅RSW玻璃的替代品,作为高含铅玻璃的替代品。
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来源期刊
Journal of Non-crystalline Solids
Journal of Non-crystalline Solids 工程技术-材料科学:硅酸盐
CiteScore
6.50
自引率
11.40%
发文量
576
审稿时长
35 days
期刊介绍: The Journal of Non-Crystalline Solids publishes review articles, research papers, and Letters to the Editor on amorphous and glassy materials, including inorganic, organic, polymeric, hybrid and metallic systems. Papers on partially glassy materials, such as glass-ceramics and glass-matrix composites, and papers involving the liquid state are also included in so far as the properties of the liquid are relevant for the formation of the solid. In all cases the papers must demonstrate both novelty and importance to the field, by way of significant advances in understanding or application of non-crystalline solids; in the case of Letters, a compelling case must also be made for expedited handling.
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