Abstract
We performed measurements on an ablated volume of a brass sample using optical microscopy and spectroscopic analysis of the plasma generated by Nd:YAG laser irradiation. A parametric study was investigated under different gas pressures and laser energy conditions for several time delays in order to determine the laser ablation plume with "ideal" properties. The ablation volume of the brass sample was determined by measuring the volume of the crater after laser ablation. As a result, we have observed that the surrounding gas pressure influences the amount of the ablated material and the expansion dynamics of the plasma plume. The mass fractions of copper, zinc and lead were measured by using CF-LIBS technique. Slight elemental concentration variations, not exceeding 4%, were found when compared with certified values.
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