0.351μm激光辐照靶角度和时间分辨的侧向散射研究
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摘要: 建立了一套角度和时间同时分辨的散射光诊断系统，利用星光Ⅱ装置输出的0.351μm激光辐照平面靶，研究了激光与靶作用产生的侧向散射光的时间行为，实验对金盘靶、CH膜靶和泡沫CH靶与激光作用产生的散射激光进行了研究，在多个角度获得了时间分辨的散射光信息，由角分布的结构得到了等离子体密度分布的一些重要信息。Abstract: Recently we have developed a multiple angle timeresolved system (MATRS) to detect scattering lights from laserproduced plasmas. In 1998, we have used the diagnostic systems mentioned above to investigate the scattering processes in plasma. These experiments were designed to enhance our understanding to scattering processes. 0.351μm laser light with about 70J at average intensities of (1～2)×10 14W/cm 2 were used to irradiate gold disks, CH disks and gold disks pasted CH foam. A lot of diagnostics were used to diagnosis the scattering behavior. The important result of experiments is the temporal behavior of the side scattering. The experimental results give us some information about electron temperature and density in the laserproduced plasmas.
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