Development of in-situ near-field fluorescence and Raman microscopy and structural analyses of radionuclide adsorption

从处置废物附近到我们生活的生物圈的地下环境被称为天然屏障，预计将提供屏障功能，以阻止释放的放射性核素通过扩散和吸附到岩石上而迁移。为了提高核废物处置的性能评估，必须了解这种吸附现象和modelit.In这项研究中，近场光学技术的重点和用于检测放射性核素的矿物，这可能是真实的地下环境的主要组成部分的表面吸附的排放。所获得的荧光光谱和衰减被进一步用于调查其吸附结构的基础上已知的表面结构的表面。

Subsurface environments from the vicinity of disposed wastes to our-living biosphere are called natural barrier and expected to provide barrier function to retard the migration of released radionuclides through the diffusion and sorption to rocks. In order to improve the performance assessment of nuclear waste disposal, one must understand such sorption phenomena and model it. In this study, near-field optical technique was focused and used to detect emission from radionuclides adsorbed on the surfaces of minerals, which could be major constituents of real subsurface environments. The obtained fluorescence spectra and decays were further used to investigate their sorption structures on the basis of known surface structures of the surfaces.