脉冲Nd∶YAG激光烧蚀Al产生等离子体特征辐射的机理研究  

Radiation mechanism study of charateristic emission in laser ablated plasma of metal Al

作　　者：黄庆举[1] 方尔梯[2] 

机构地区：[1]哈尔滨工业大学威海分校理学系,威海264209 [2]华东理工大学化学物理研究室,上海200237

出　　处：《原子与分子物理学报》2000年第1期63-66,共4页Journal of Atomic and Molecular Physics

基　　金：国家自然科学基金!资助项目 ( 2 92 73 13 0 )

摘　　要：采用时间与空间分辨光谱测量技术,研究了在Ar气为缓冲气体下,用脉冲Nd∶YAG激光烧蚀Al产生等离子体的发射光谱及其随气压的变化规律,对粒子的激发机理进行了讨论,认为特征谱线是由复合辐射为主要机理,并用此结论在一定程度上解释了实验结果。Using temporal and spatial resolved spectrum, the emission spectrum and its change with ablation gas pressure in laser ablated metal Al are investigated. Recombination radiation is considered to be the primary radiation mechanism of characteristic emissions, and in a certain extent the time and spatial emission intensity distribution in different gas pressures is to be explained by it.

关 键 词：ND:YAG激光 激光等离子体 特征谱线 激光烧蚀 铝 

分 类 号：O644.18[理学—物理化学] O614.31[理学—化学]