【摘要】 通过掺杂得到的 Mg SO4∶ Tm,P粉末样品 ,经 60 Co和13 7Csγ辐照后 ,测定了 10 -4～ 2× 10 4Gy范围内的热释光的发光曲线和三维光谱 ,确定了 TL峰的峰参数和陷阱参数值 ,主剂量峰位于 2 89.3℃左右 ,辐射剂量响应为超线性 ,从其发光谱上可看到其发光波长主要位于 36 5、4 6 0、6 6 0 mm。通过与其他材料的比较 ,观测到其灵敏度高 ,剂量响应范围宽 ,稳定性好 ,可作为实用的 TL材料在剂量学中获得应用更多还原

【Abstract】 The TL glow curves and three dimensional spectrum of co doped MgSO 4∶Tm,P powder sample were measured after exposed it to gamma radiation ( 60 Co and 137 Csγ) from 10 -4 ～2×10 4Gy. Some peaks parameters and trap parameters of TL peaks were calculated. The main dose peak is about at 289.3℃, and the dose response is super linear. From the three dimensional TL spectrum, it shows that the main glow wavelengths is at about 365nm, 460nm and 660nm. By comparison of some other TL materials, this phosphor has some good performances, such as high sensitivity, good stability and a wide span of dose response. It may be a good TL material that can be applied widely in dosimetry.更多还原