切向气流作用下激光对典型金属靶的辐照效应  

Irradiation effects of laser on typical metal targets under tangential airflow

作　　者：焦路光[1] 赵国民[1] 江厚满[1] 

机构地区：[1]国防科学技术大学光电科学与工程学院,湖南长沙410073

出　　处：《中国光学》2011年第1期77-81,共5页Chinese Optics

基　　金：粤港关键领域重点突破项目(No.2004A10403021);广东省攻关项目(No.2006A10401006)

摘　　要：总结了亚音速切向气流在激光辐照典型金属靶过程中所起的作用,提出气流效应主要包括增大靶与外界环境的对流换热强度;移除靶表面的熔化层,加快烧蚀速率;促进靶的氧化反应,有利于靶的烧蚀;空气动力学效应导致靶在熔化之前就可发生破裂等几个方面。对上述气流效应进行了详尽的分析,同时指出应对氧化反应及热力联合效应进行更广泛的实验研究,获得更明确的规律性认识,以便建立统一的物理数学模型,从而为实际的工程应用提供参考。The effects of some metal targets subjected to the laser irradiation and tangential airflow are overviewed. It points out that the airflow usually affects the metal targets in such ways：cooling the targets, removing the melt layer, supporting the combustion reaction and breaking the target prior to melt-through. After an- alyzing on the airflow effects in details, it suggests that extensive experimental research should be performed for the combustion reaction and thermal-mechanical effect during laser irradiation. By this way the clearer laws can be understood and the unified physical model can be developed for engineering applications.

关 键 词：激光与物质相互作用 金属靶 切向气流 烧蚀 氧化反应 热力效应 

分 类 号：TN249[电子电信—物理电子学]