Development of evaluation method of glass materials by the UMS technology

物理性质，例如，玻璃材料的折射率和热膨胀可以通过添加掺杂剂来控制。 用于制造玻璃的评估技术对于获得具有所需性质的玻璃是重要的。 在这项研究中，声学性能（泄漏表面声波速度，纵向速度，和密度）的超声显微光谱技术进行了测量。 得到了声学性质与假想温度、OH浓度和Cl浓度之间的关系。 我们还得到了F掺杂的合成石英玻璃的声学性能，F浓度和假想温度之间的关系。

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.