In contrast to relatively pure silica glass (fused silica—FS), commercial silica-rich glasses contain significant fractions of additional oxide components. In particular, soda-lime glass (SLG) consists of approximately 71% SiO2 by weight, which raises the question: what is the effect of additional cations on the shock compression response of silica-rich glasses? To address this question, plate impact experiments were conducted to determine the high-pressure Hugoniot states for shocked SLG (37 to 120 GPa) and compared with recently reported results on FS. Using laser interferometry, particle velocity profiles were measured at the impact surface and at the SLG/LiF window interface. In all experiments, the transmitted profiles show a single shock wave, with no features indicative of a phase transformation. The Hugoniot states determined from the wave profiles are described well using a linear shock velocity–particle velocity relation. Interferometry measurements (using 1550-nm wavelength laser) at the impact surface show that SLG is transparent when shocked to 55 GPa, transparent for tens of nanoseconds after impact between 55 and 81 GPa, and opaque beyond 81 GPa. From impact surface measurements, a linear relationship between the apparent and true particle velocity was observed, resulting in a linear relationship between the refractive index (at 1550 nm) and density. At 120 GPa, the SLG density is nearly twice its ambient value, indicating that SLG can achieve highly dense amorphous states. When compared to FS, shocked SLG is much less compressible and likely does not transform to a crystalline phase. A plausible explanation for this difference is suggested.

中文翻译：

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钠钙玻璃冲击压缩至 120 GPa 的 Hugoniot 态和光学响应

与相对纯净的石英玻璃（熔融石英 - FS）相比，商业富含二氧化硅的玻璃含有大量额外的氧化物成分。特别是，钠钙玻璃 (SLG) 由大约 71% 重量的 SiO2 组成，这就提出了一个问题：额外的阳离子对富二氧化硅玻璃的冲击压缩响应有什么影响？为了解决这个问题，进行了板块碰撞实验以确定冲击 SLG（37 至 120 GPa）的高压 Hugoniot 状态，并与最近报道的 FS 结果进行比较。使用激光干涉测量法，在撞击表面和 SLG/LiF 窗口界面处测量粒子速度分布。在所有实验中，传输的剖面显示单个冲击波，没有指示相变的特征。使用线性冲击速度-粒子速度关系很好地描述了从波浪剖面确定的 Hugoniot 状态。撞击表面的干涉测量（使用 1550 纳米波长的激光）表明，SLG 在受到 55 GPa 冲击时是透明的，在 55 到 81 GPa 之间冲击后几十纳秒是透明的，超过 81 GPa 是不透明的。从撞击表面测量中，观察到表观速度和真实粒子速度之间的线性关系，导致折射率（1550 nm）和密度之间的线性关系。在 120 GPa 时，SLG 密度几乎是其环境值的两倍，表明 SLG 可以实现高密度的非晶态。与 FS 相比，冲击 SLG 的可压缩性要低得多，并且可能不会转变为结晶相。