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气炮加载实验中光学窗口透射率测量技术及其应用

DOI: 10.11858/gywlxb.2010.06.011, PP. 467-471

Keywords: 光学窗口,冲击,卸载,透射率

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Abstract:

报道一种用于气炮加载条件的窗口透射率测量技术。该技术将一种激发电压低(4.5V)、响应时间快(约500ns)、输出功率稳定的半导体脉冲光源设置在弹丸内部,在碰靶前激发出光,作为照明光源,用于观测透明样品/窗口在加载过程中的透射率变化。将该技术用于石英玻璃冲击透明性研究,发现石英玻璃在经冲击压缩再卸载到水的过程中,其透射率下降了近30%,该结果不支持文献中所给出的液态水压致固化的解释。

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