...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Optical properties and valence state of Sm ions in aluminoborosilicate glass under beta-irradiation
【24h】

Optical properties and valence state of Sm ions in aluminoborosilicate glass under beta-irradiation

机译：β辐射下铝硼硅酸盐玻璃中Sm离子的光学性质和价态

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Sm-doped borosilicate glasses exposed to beta-irradiation with doses from 8 x 105 up to 4 x 109 Gy have been studied by luminescence, Raman and electron paramagnetic resonance (EPR) spectroscopies. The luminescence spectra for pristine and irradiated glasses reveal that the P-irradiation process affects valence state of samarium ions. Intense emission at 684 and 727 nm excited by Ar+ laser (514.5 nm) due to the transition of Sm2+ ion was observed after irradiation. Relative proportion Of Sm2+ ions estimated as a function of both Sm2O3 content and irradiation dose has the tendency to increase with increasing irradiation dose. In contrast, the EPR spectra of the studied samples reveal a decrease of the defect content, which are mostly hole defects, produced during irradiation, as a function Of Sm2O3 content. Finally, the addition Of Sm2O3 leads to a decrease of the Si-O-Si bending vibration modes shift and polymerisation changes under irradiation. (C) 2007 Elsevier B.V. All rights reserved.
机译：通过发光，拉曼和电子顺磁共振（EPR）光谱学研究了暴露于β辐照剂量为8 x 105至4 x 109 Gy的掺Sm的硼硅酸盐玻璃。原始玻璃和辐照玻璃的发光光谱表明，P辐照过程会影响sa离子的价态。照射后，观察到由于Sm2 +离子的跃迁，由Ar +激光（514.5 nm）激发的684和727 nm处的强烈发射。随Sm2O3含量和照射剂量而变化的Sm2 +离子的相对比例随照射剂量的增加而趋于增加。相反，所研究样品的EPR光谱显示，随着Sm2O3含量的增加，在辐照过程中产生的缺陷含量（主要是空穴缺陷）减少了。最后，Sm2O3的添加导致Si-O-Si弯曲振动模式的减少和辐照下聚合反应的改变。 （C）2007 Elsevier B.V.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号