激光产生Al等离子体基本特性的实验研究  

Experimental Investigation on the Basic Properties of Laser-produced Al Plasma

作　　者：薛思敏[1,2] 欧阳玉花[1] 

机构地区：[1]兰州交通大学数理与软件工程学院,甘肃兰州730070 [2]西北师范大学物理与电子工程学院,甘肃兰州730070

出　　处：《兰州交通大学学报》2012年第4期149-151,共3页Journal of Lanzhou Jiaotong University

摘　　要：利用Nd∶YAG脉冲激光烧蚀Al靶,观测在空气中产生的等离子体发射光谱.研究了等离子体光谱强度以及等离子体电子温度和电子密度的空间变化规律.结果表明:铝原子谱线强度比离子谱线强度强得多,且衰减慢,持续的空间距离较长;等离子体的电子温度与电子密度都随空间距离的增加呈下降趋势,空间分布规律相似.The plasma emission spectra have been measured with pulsed Nd ＂ YAG laser ablating metal AI target in air. The dependence of temperature and density of the electron and emission spectra line intensity on the space are studied. The results show that Al atoms line intensity is much stronger than the ion line intensity,and it decays slowly and sustains longer space distance; the electron temperature and electron density decline with the increase of the spatial distance,and their spatial distribution rule is similar.

关 键 词：激光烧蚀 电子温度 电子密度 

分 类 号：O536[理学—等离子体物理]