Bos A J J, Prokić M, Brouwer J C
Delft University of Technology, IRI, Mekelweg 15, 2629 JB Delft, The Netherlands.
Radiat Prot Dosimetry. 2006;119(1-4):130-3. doi: 10.1093/rpd/nci641. Epub 2006 Apr 27.
In this paper main optically stimulated luminescence (OSL) and thermoluminescence (TL) characteristics are presented of a newly synthesised material MgO doped with terbium (Tb) developed at the Institute of Nuclear Science, Vinca. A thermally stimulated emission spectrum showed the characteristic lines of Tb3+ in a wide range of wavelengths. The TL sensitivity of the main TL glow peak at 315 degrees C is 1.7 times higher than the TL of Al2O3:C. The highest OSL sensitivity was obtained under green lamp (500-570 nm) stimulation. The fast component in the OSL decay curve is 2.4 times faster than Al2O3:C. The OSL signal is linear with dose up to 10 Gy. The lower limit of detection was found to be 100 microGy. These first results show that the newly synthesised material has some promising properties for the application in radiation dosimetry.
本文介绍了由温卡核科学研究所研制的一种新合成的掺铽（Tb）氧化镁材料的主要光激发发光（OSL）和热释光（TL）特性。热激发发射光谱在很宽的波长范围内显示出Tb3+的特征谱线。315℃时主要热释光发光峰的热释光灵敏度比Al2O3:C的热释光灵敏度高1.7倍。在绿灯（500 - 570nm）刺激下获得了最高的光激发发光灵敏度。光激发发光衰减曲线中的快速成分比Al2O3:C快2.4倍。光激发发光信号在剂量高达10Gy时呈线性。检测下限为100微戈瑞。这些初步结果表明，新合成的材料在辐射剂量测定应用方面具有一些有前景的特性。
