激光产生的激波在靶材中的传播及层裂效应  

Propagation and Spall Effect of Shock Wave Induced by Laser in Targets

作　　者：张建泉[1] 陈荣华[1] 强希文[1] 刘锋[1] 

机构地区：[1]西北核技术研究所,西安710024

出　　处：《中国激光》2002年第3期197-200,共4页Chinese Journal of Lasers

摘　　要：应用一维理想弹塑性流体力学模型 ,通过有限差分方法 ,研究了XeCl准分子脉冲强激光辐照固体靶材时 ,表面烧蚀压力在靶材中产生的激波的形成、持续和衰减过程 ;并应用累积损伤判据和动态断裂准则 ,分别计算了金属铝和碳酚醛靶材的层裂损伤。By means of 1-D elastic-plastic hydrodynamic model and finite differential method, it is studied that formation, sustain, and decay of shock wave were induced by powerful pulsed excimer laser in target materials. By using the criterion of accumulate damage and dynamic fracture, the spall thicknesses are given in aluminum and C/Ph, respectively. These calculation results are in agreement with the experimental measurements reported, and reasonably explained experimental phenomena.

关 键 词：准分子激光 激波传播过程 靶材 层裂损伤 

分 类 号：TN24[电子电信—物理电子学] O432.1[机械工程—光学工程]