掺铕硫酸锶荧光粉的热释光和光释光
TL and OSL of SrSO4 phosphors doped with Eu.
作者信息
Tang Q, Zhang C X, Luo D L, Leung P L, Xiong Z Y
机构信息
Department of Physics, Zhongshan University, Guangzhou 510275, People's Republic of China.
出版信息
Radiat Prot Dosimetry. 2006;119(1-4):238-43. doi: 10.1093/rpd/nci578. Epub 2006 Apr 27.
The thermoluminescence (TL) and optically stimulated luminescence (OSL) of SrSO4:Eu (0.1 mol%) powder sample were studied. The TL and OSL emission spectrum are measured after irradiation (absorbed dose 100 Gy) of 90Sr source; both of them showed that the emission wavelength is at approximately 375 nm, which indicates that TL and OSL have the same luminescence centres, and the luminescence comes from transitions between the energy levels of Eu2+. The TL glow curves and OSL decay curves illustrate that there is only one main TL peak but two main components in OSL curves. By a comparative study of TL and OSL it is concluded that OSL traps are different from TL traps. The TL and OSL dose responses of SrSO4:Eu phosphor were measured, and it showed that phosphor has similar dose responses for OSL and TL.
研究了SrSO4:Eu（0.1摩尔%）粉末样品的热释光（TL）和光激发发光（OSL）。在90Sr源照射（吸收剂量100 Gy）后测量TL和OSL发射光谱；两者均表明发射波长约为375 nm，这表明TL和OSL具有相同的发光中心，且发光来自Eu2+能级之间的跃迁。TL发光曲线和OSL衰减曲线表明，TL只有一个主要峰，而OSL曲线有两个主要成分。通过对TL和OSL的比较研究得出结论，OSL陷阱与TL陷阱不同。测量了SrSO4:Eu磷光体的TL和OSL剂量响应，结果表明该磷光体对OSL和TL具有相似的剂量响应。
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