Development of evaluation method of glass materials by the UMS technology

玻璃材料的物理性质，例如折射率和热膨胀，可以通过添加掺杂剂来控制。制备玻璃的评估技术对于获得具有所需性能的玻璃是重要的。在本研究中，利用超声显微波谱技术测量了渗漏声表面波速、纵波速度和密度等声学特性。得到了声学性能与虚化温度、羟基浓度、氯离子浓度的关系。我们还得到了F掺杂合成二氧化硅玻璃的声学性质与F浓度和虚化温度之间的关系。

Physical properties, e.g., refractive index and thermal expansion, of glass materials can be controlled with addition of dopants. Evaluation techniques for fabricated glasses are important to obtain glasses having the desired properties. In this study, acoustic properties (leaky surface acoustic wave velocity, longitudinal velocity, and density) were measured by the ultrasonic microspectroscopy technology. Relationships among acoustic properties, fictive temperature, OH concentration, and Cl concentration were obtained. We also obtained relationships among acoustic properties, F concentration, and fictive temperature for F-doped synthetic silica glasses.