Scintillation Properties of Nd3+-Doped Lu2O3 Ceramic in the Visible and Infrared Regions
Scintillation Properties of Nd3+-Doped Lu2O3 Ceramic in the Visible and Infrared Regions
复制标题
掺Nd3 Lu2O3陶瓷的可见光和红外区闪烁性能
DOI：
10.1109/tns.2013.2290554
复制
发表时间：
2014
影响因子：
1.8
通讯作者：
Georges Boulon and Akira Yoshikawa
中科院分区：
文献类型：
--
作者：
Shunsuke Kurosawa;Liqiong An;Akihiro Yamaji;Akira Suzuki;Yuui Yokota;Kenji Shirasaki;Yamamura Tomoo;Akihiko Ito;Takashi Goto;Georges Boulon and Akira Yoshikawa
掺杂Nd 3+的Lu 2 O3（Nd：Lu 2 O3）是红外闪烁体的候选者，因为（i）Lu 2 O3具有9.5 g/cm 3的高密度和67的高原子序数，以及（ii）掺杂Nd 3+的材料在红外范围内发射，并且由于人体具有600至1，100 nm之间的透明度窗口，因此Nd 3+的发射线可用于医疗应用。然而，由于高熔点（2，510 °C），使用常规晶体生长方法制造Lu 2 O3单晶极其困难。利用固态反应，它是更容易制造Lu 2 O3到陶瓷结构。因此，采用放电等离子烧结法制备了Nd：Lu 2 O3透明陶瓷。该技术相对简单，比其他方法（如真空热压）耗时更少。在可见光区和红外区研究了所制备陶瓷的闪烁性能和透射光谱。在800- 1，200 nm范围内测量了放射性发光光谱。在人体透明窗内观察到Nd ~（3+）发射谱线。因此，这些陶瓷材料可能是医学成像应用的候选者。
Nd3+-doped Lu2O3(Nd: Lu2O3) is a candidate for an infrared scintillator because (i) Lu2O3has a high density of 9.5 g/cm3and a high atomic number of 67 and (ii) Nd3+-doped materials emit in the infrared range and the emission lines from Nd3+can be used in medical applications since human body has a transparency window between 600 and 1,100 nm. However, it is extremely difficult to fabricate Lu2O3single crystals using conventional crystal growth methods because of the high melting point (2,510°C). Using solid-state reactions, it is much easier to fabricate Lu2O3into a ceramic structure. Therefore, Nd: Lu2O3transparent ceramics were fabricated using a spark plasma sintering method. This technique is comparatively simple and consumes less time than other methods such as vacuum hot pressing. The scintillation properties and transmittance spectra of the as-produced ceramics were studied in both the visible and infrared regions. Radioluminescence spectra were measured in the range 800-1,200 nm. Nd3+emission lines were observed in the transparency window of human body. Thus, these ceramic materials could be a candidate for medical imaging applications.