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摘要: 利用二级轻气炮加载手段,开展了多通道辐射高温计结合可测量任意反射表面速度干涉仪(VISAR)的联合诊断技术研究。通过测量钽酸锂单晶的冲击相变,以确定联合诊断技术的可行性。结果显示,在同一发实验中,成功地获得了样品的界面速度剖面和光谱辐亮度历史,由此得到了钽酸锂单晶冲击相变的实验证据,表明该联合诊断技术是可行有效的。该技术对今后开展其它材料的高压物性研究具有一定的参考价值。Abstract: Combined measurement with two or three different diagnostic systems in one shock-wave experiment, which could provide more information on high-pressure physical properties of materials and help people better understanding the nature of these properties, is the inexorable trend for the development of the shock-wave experimental technique. A combined diagnostic technique with multi-channel pyrometer and VISAR was primarily developed in two-stage light gas gun experiments. In one experiment, we successfully obtained spectral radiance histories and particle velocity profiles of LiTaO3 sample by this technique, which indicated shock-induced luminescence and shock-induced phase transformation of LiTaO3. The results show that combined measurement with pyrometer and VISAR is practicable for our shock-wave experiment.
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Key words:
- multi-channel pyrometer /
- VISAR /
- DPS
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