激光加载下铝材料的冲击温度测量

利用神光Ⅱ装置上搭建的用于激光冲击波实验的温度诊断系统（该系统包括高时空分辨的扫描高温计和谱时分辨的扫描高温计），以强激光加载铝材料冲击温度的测量，获得了铝材料冲击高温辐射发光谱的高时空分辨信号图像，结合灰体辐射理论模型，计算得到了冲击波速度19.06 km/s时铝材料的冲击温度达2.95 eV，该温度与SESAME库中冲击温度接近。研究结果表明采用该测温系统能够有效诊断金属材料的冲击温度，为后续进一步获取金属材料冲击温度数据奠定了基础。

Measurements of aluminum's shock temperature on SG-Ⅱ high-power laser facility

Measurement of shock temperature under high temperature and high pressure is an essential part of equations of state(EOS) research. This paper introduces a temperature diagnosis system for laser-driven shock wave experiment on the basis of SG-Ⅱ high-power laser facility. The system comprised the streaked optical pyrometer (SOP) which is high time-resolved and the spectral resolved SOP (SSOP). The VISAR system was added to measure emissivity. The on-line calibration system of temperature measurement was established simultaneously using a NIST traceable standard lamp. High time-resolved signal images of the high temperature radiation spectrum were obtained through experiments driven by high power laser on aluminum using the diagnosis system. The shock temperature of aluminum was obtained according to gray body radiation theoretical model. The measured temperature was 2.95 eV, which was close to Hugoniot temperature in SESAME library at the same shock wave velocity. The experiment result indicates that the temperature measurement system used in the experiment can diagnose the shock temperature of metallic materials effectively. Key words: