稀土离子掺杂li20 - cao - b2o3玻璃的热释光特性及剂量学研究

J. Anjaiah, G. Rani, J. Shankar, P. Raju
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引用次数: 0

摘要

研究了掺杂4种稀土离子(Pr3+、Nd3+、Sm3+和Eu3+)的纯li20 - cao - b2o3玻璃在303 ~ 573k范围内的热释光特性;纯玻璃在424K时呈现出单TL峰。当掺杂不同的稀土离子时,玻璃没有出现额外的发光峰,但随着TL光输出强度的增加,现有发光峰的发光峰温度逐渐向更高的温度移动。发现Eu3+掺杂玻璃的发光曲线下面积最大。与观测到的TL峰相关的陷阱深度参数已使用Chen公式进行了评估。这些玻璃在辐射剂量测定中的可能用途已被描述。结果表明,掺铕硼酸钙玻璃具有作为热释光剂量计的潜力。研究了掺杂4种稀土离子(Pr3+、Nd3+、Sm3+和Eu3+)的纯li20 - cao - b2o3玻璃在303 ~ 573k范围内的热释光特性;纯玻璃在424K时呈现出单TL峰。当掺杂不同的稀土离子时,玻璃没有出现额外的发光峰,但随着TL光输出强度的增加,现有发光峰的发光峰温度逐渐向更高的温度移动。发现Eu3+掺杂玻璃的发光曲线下面积最大。与观测到的TL峰相关的陷阱深度参数已使用Chen公式进行了评估。这些玻璃在辐射剂量测定中的可能用途已被描述。结果表明,掺铕硼酸钙玻璃具有作为热释光剂量计的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Thermoluminescence characteristics and dosimetric aspects of Li2O-Cao-B2O3 glasses doped with rare earth ions
Thermoluminescence (TL) characteristics of X-ray irradiated pure and doped with four different rare earth ions (viz., Pr3+, Nd3+, Sm3+ and Eu3+) Li2O-Cao-B2O3 glasses have been studied in the temperature range 303-573K; the pure glass has exhibited single TL peak at 424K. When this glass is doped with different rare earth ions no additional peaks are observed but the glow peak temperature of the existing glow peak shifted gradually towards higher temperatures with gain in intensity of TL light output. The area under the glow curve is found to be maximum for Eu3+ doped glasses. The trap depth parameters associated with the observed TL peaks have been evaluated using Chen’s formulae. The possible use of these glasses in radiation dosimetry has been described. The result clearly showed that europium doped calcium borate glass has a potential to be considered as the thermoluminescence dosimeter.Thermoluminescence (TL) characteristics of X-ray irradiated pure and doped with four different rare earth ions (viz., Pr3+, Nd3+, Sm3+ and Eu3+) Li2O-Cao-B2O3 glasses have been studied in the temperature range 303-573K; the pure glass has exhibited single TL peak at 424K. When this glass is doped with different rare earth ions no additional peaks are observed but the glow peak temperature of the existing glow peak shifted gradually towards higher temperatures with gain in intensity of TL light output. The area under the glow curve is found to be maximum for Eu3+ doped glasses. The trap depth parameters associated with the observed TL peaks have been evaluated using Chen’s formulae. The possible use of these glasses in radiation dosimetry has been described. The result clearly showed that europium doped calcium borate glass has a potential to be considered as the thermoluminescence dosimeter.
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