Varvarezos Lazaros, Davitt Stephen J, Costello John T, Kelly Thomas J
School of Physical Sciences and National Centre for Plasma Science and Technology, Dublin City University, 9 D09 Dublin, Ireland.
Department of Computer Science and Applied Physics, Galway-Mayo Institute of Technology, Galway Campus, T91 T8NW Galway, Ireland.
Materials (Basel). 2020 Dec 2;13(23):5489. doi: 10.3390/ma13235489.
In this work we investigate the effect of the confinement angle on self-colliding aluminium laser produced plasmas. More specifically, we apply V-shaped channel targets of different angles (90°, 60° and 30°) and report both broadband and filtered time-resolved fast imaging measurements on the formation of such plasmas in ambient air. Based on the broadband measurements we suggest that the plasmas formed on the two inner walls of the V-shaped channel expand normally to the surface, interact with each other and possibly stagnate. The spectrally filtered fast imaging reveals the presence of a spatial distribution of different species within the plasmas and signatures of forced recombination.
在这项工作中，我们研究了约束角对自碰撞铝激光产生等离子体的影响。更具体地说，我们应用了不同角度（90°、60°和30°）的V形通道靶，并报告了在环境空气中此类等离子体形成的宽带和滤波时间分辨快速成像测量结果。基于宽带测量，我们认为在V形通道两个内壁上形成的等离子体垂直于表面扩展，相互作用并可能停滞。光谱滤波快速成像揭示了等离子体内不同物种的空间分布以及强迫复合的特征。
