Method and apparatus to laser ablation—laser induced breakdown spectroscopy

摘要

A method and apparatus for analyzing a target material is provided. A first laser beam pulse can be incident on a target material to create an ablation event so as to produce an ablation plume of target material. Such ablation events can include plasma ablation, sub-plasma ablation, and thermal desorption. At least a portion of the ablation plume of target material can then be transported a sufficient distance away from the ablation event that a second laser beam pulse can interact with the at least a portion of the ablation plume of target material to create an analytical plasma such that the analytical plasma is uncoupled from the ablation event. The creation of the analytical plasma results in one or more elements of the at least a portion of the ablation plume of target material undergoing atomic emission, which can be collected and analyzed.