Abstract
The interaction of the pulsed laser beam with the material causes an ablation of mass from a liquid or solid measuring object. This mass is partially evaporated and transferred into the plasma state, where the species are excited to emit element-specific radiation used for LIBS. However, a part of the ablated mass leaves the measuring object as material vapor, particle, or liquid. At a later stage, this vapor condenses, forms particulates, or precipitates in the neighborhood of the interaction region. The particles ejected may be carried away by a gas flow or they propagate back to the surface of the measuring object forming a deposition. If a melt phase occurs – e.g., in case of the interaction of pulsed laser radiation with metals – a part of the mass is ejected as a liquid forming splashes or droplets which resolidify in the surrounding atmosphere or on the surface of the measuring object. Due to the complexity of processes, it is generally a difficult task to determine quantitatively the amount of ablated mass for single laser pulses or laser bursts.
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Noll, R. (2012). Material Ablation. In: Laser-Induced Breakdown Spectroscopy. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-20668-9_7
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DOI: https://doi.org/10.1007/978-3-642-20668-9_7
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