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数值计算了激光直接驱动铝飞片空腔靶模型．结果表明：激光和靶结构参数对飞片状态和靶中冲击波特性的影响很大；如果激光和靶结构参数选择合理的话，可以近似实现飞片与靶的对称碰撞，而且靶中冲击波的稳定区有一定的空间宽度；因而，选择适当厚度的三台阶靶，可以近似实现状态方程的绝对测量
The laser direct-driven aluminum fly-gap cavity target model is numerically calculated. The results show that the parameters of laser and target have a great influence on the state of flyer and the characteristics of shock wave in the target. If the parameters of laser and target structure are chosen reasonably, the collisions between flyer and target can be approximated. There is a certain spatial width; therefore, the choice of the appropriate thickness of the three step target, can approximate the absolute equation of state