首页> 外文会议>the Symposium Scientific Basis for Nuclear Waste Management >Structural Characterisations of Rare Earth-Rich Glasses for Nuclear Waste Immobilisation
【24h】

Structural Characterisations of Rare Earth-Rich Glasses for Nuclear Waste Immobilisation

机译:用于核废物固定的稀土玻璃的结构特征

获取原文
获取外文期刊封面目录资料

摘要

New glassy matrices, able to incorporate new highly concentrated radioactive liquid wastes (HLW), are being studied. Investigations were performed on rare earth-rich glasses, known as very durable matrices. The selected basic glass composition was (wt. %): 51.0 SiCh- 8.5 B_2O_3-12.2 Na+2O - 4.3 Al_2O_3 - 4.8 CaO - 3.2 ZrO_2 - 16.0 Nd_2O_3. To determine both the environment around the rare earth in this glass and its evolution according to its concentration (1.3 - 30 wt. % Nd2Ch), EXAFS (Extended X-Ray Absorption Fine Structure) spectroscopy at the Lm-edge of neodymium and optical absorption spectroscopy were used. By coupling these two characterisation methods, several hypotheses are proposed about the nature of the rare earth neighbouring in the glass.
机译:正在研究新的玻璃矩阵,能够纳入新的高度浓度放射性液体废物(HLW)。对稀土丰富的眼镜进行调查,称为非常耐用的矩阵。所选的碱性玻璃组合物(重量%):51.0 sich-8.5 B_2O_3-12.2 Na + 2O-4.3 Al_2O_3 - 4.8 CaO - 3.2 ZrO_2 - 16.0 ND_2O_3。根据其浓度(1.3-30重量%ND2CH),在钕和光学吸收的浓度(1.3-30重量%ND2CH)中,根据其浓度(1.3-30重量%的ND2CH),EXAFS(延长X射线吸收细结构)光谱和光学吸收,确定稀土周围的环境及其进化使用光谱学。通过耦合这两种表征方法,提出了几个假设关于玻璃中邻近邻近的稀土性质的本质。

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