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Issue 8, 2014
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Basic mechanisms of signal enhancement in ns double-pulse laser-induced breakdown spectroscopy in a gas environment

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Abstract

Understanding the mechanisms of the signal enhancement in double-pulse laser-induced breakdown spectroscopy is highly desirable. It is evident, however, that it is not possible to fit a unique general model to the observations obtained in collinear or in orthogonal geometries, in pre-spark or in re-heating schemes, using ns or fs pulses, in a gas or liquid environment. We believe, instead, that by considering separately the specific experimental cases (for example: a given irradiation geometry, a given pulse timing, etc.) the comprehension of the processes occurring during double-pulse experiments might become easier. We focus on one specific experimental case, namely ns double-pulse irradiation of solid targets in a gaseous environment, and classify the experiments according to the irradiation mode (orthogonal pre-spark, collinear and orthogonal re-heating). Then, we propose a description of the processes occurring in the different cases, on the basis of data and interpretations that are available in the literature.

Graphical abstract: Basic mechanisms of signal enhancement in ns double-pulse laser-induced breakdown spectroscopy in a gas environment

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Publication details

The article was received on 24 Jan 2014, accepted on 30 Apr 2014 and first published on 30 Apr 2014


Article type: Critical Review
DOI: 10.1039/C4JA00033A
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J. Anal. At. Spectrom., 2014,29, 1318-1338

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    Basic mechanisms of signal enhancement in ns double-pulse laser-induced breakdown spectroscopy in a gas environment

    E. Tognoni and G. Cristoforetti, J. Anal. At. Spectrom., 2014, 29, 1318
    DOI: 10.1039/C4JA00033A

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