铝靶三倍频激光烧蚀参数实验研究

叙述了采用时间空间积分晶体谱仪和时间分辨晶体谱仪等探测器测量铝平面靶强激光烧蚀参数的方法，给出了三倍频强激光烧蚀铝平面靶的质量烧蚀速率和烧蚀压。实验结果与收集到的国外数据进行了比较，它们在误差范围内一致。

Experimental Study of Ablation Parameters of Aluminium Target by 0.35 μm Laser

The laser-driven ablation parameters are measured by using the method of time-integrated and time-resolved crystal spectrometers. The following experimental results are obtained. For aluminium target driven by 0.35 μm laser with absorbed laser intensity of 1.4×1014 W/cm2, mass ablation rate measured by time-integrated crystal spectrometer, is 6.8×105 (g/cm2·s), and ablative pressure is estimated to be 4.7×1012 Pa and 4.4×1012 Pa according to momentum conservation and energy conservation, respectively. Mass ablation rate with absorbed laser intensity of 1.6×1014 W/cm2, measured by time-resolved crystal spectrometer, is 6.1×105 (g/cm2·s) and ablative pressure is estimated to be 4.4×1012 Pa from energy conservation. These results are in accordance with the results obtained by other laboratories within the experimental error.