外加静电场下激光诱导等离子体特性的实验研究  

AN INVESTIGATION ON THE PROPERTY OF THE LASER PRODUCED PLASMA UNDER ADDITIONAL STATIC ELECTRICITY FIELD

作　　者：崔执凤[1] 凤尔银[1] 黄时中[1] 陆同兴[1] 赵献章[1] 路轶群[1] 马军[1] 

机构地区：[1]安徽师范大学物理系光谱与材料研究室,中科院安徽光学精密机械研究所

出　　处：《原子与分子物理学报》1996年第2期181-188,共8页Journal of Atomic and Molecular Physics

摘　　要：在外加静电场下，准分子激光诱导等离子体中Ｍｇ原子５５２．８４、５１６．７３、４７０．３０ｎｍ三条发射谱线展宽的时间分辨特性的实验研究，实验测定结果表明，外加静电场导致了原子发射谱线展宽超过Ｓｔａｒｋ展宽，这种额外展宽的大小在０．１ｎｍ左右，其中４７０．３ｎｍ谱线的加宽和线移最大，采用量子理论计算表明这种额外展宽是由于在外电场中作用下作定向运动的电子与激发态原子碰撞所致。Based on the measurement of the brodening' of the three emission lines with 552.84. 516. 73 and 470. 30urn of the Mg atom, the time resolved character of the excimerlaser produced plasma was investigated under additional static electrig field. Obtainedfrom the experiment the additional brodening of emission lines of atom spectra was inthe region about 0. Inm and was caused by the additional static electric field. Among thethree lines the value of this brodening for 470. 30urn spectral line was the largest. It wasproved from the quantum theory that this additional brodening was due to the unelasticcollision between the excited atoms and the electrons moving in a definit direction withthe additional static electric field.

关 键 词：激光微等离子体 外电场 等离子体 发射光谱 

分 类 号：O53[理学—等离子体物理]