【摘要】 研究了掺杂得到的SrSO4:Eu(0.1mol%)的粉末样品的热释光(TL)发光曲线和三维光谱。用90Sr的β射线辐照0.116～1.16kGy后,测到的热释光峰发光曲线,观察到只有一个主剂量峰,峰温位于(231.5±2.3)℃。用热释光一般级动力学方程拟合发光曲线,得到了峰参数和陷阱参数值。主剂量峰基本上不随照射剂量发生变化,辐射剂量响应为线性-亚线性。用60Coγ辐照100Gy后,测量了热释光三维光谱,确定了发光波长主要位于375nm,与其他硫酸盐基质材料中掺Eu的CaSO4:Eu,MgSO4:Eu比较,波长有所不同,可以确定这是来自于Eu2+能级跃迁的发光。更多还原

【Abstract】 The thermoluminescence （TL） glow curves and 3D emission spectra of SrSO₄:Eu （（0.1）mol%） powder sample were measured. The TL glow curves, measured after exposed to beta rays of ⁹⁰Sr with the dose range of 0.116¹.16kGy, show that emission peak is at （231.5±2.3）℃. The peak parameters and trap parameters were estimated by fitting these curves using the TL general kinetic order equation. The peak temperature is almost a constant when absorbed dose is changed, and the dose response of the peak height is linear-sublinear. The TL 3D spectra were measured after gamma rays irradiation （absorbed dose is 100Gy） of ⁶⁰Co source. It shows that the emission wavelength is at about 375nm. The wavelength is different from other Eu doped sulfate phosphors, such as CaSO₄:Eu, MgSO₄:Eu, but it is sure that the luminescence comes from transitions between energy levels of Eu²⁺.更多还原