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The Influence of Laser-particle Interaction in Laser Induced Breakdown Spectroscopy and Laser Ablation Inductively Coupled Plasma Spectrometry by Helmut Lindner; Kristofer H. Loper; David W. Hahn; Kay Niemax is a Chemistry article available to read on EtoBox.

What is The Influence of Laser-particle Interaction in Laser Induced Breakdown Spectroscopy and Laser Ablation Inductively Coupled Plasma Spectrometry about?

Particles produced by previous laser shots may have significant influence on the analytical signal in laserinduced breakdown spectroscopy (LIBS) and laser ablation inductively coupled plasma (LA-ICP) spectrometry if they remain close to the position of laser sampling. The effects of these particles on the laser-induced breakdown event are demonstrated in several ways. LIBS-experiments were conducted in an ablation cell at atmospheric conditions in argon or air applying a dual-pulse arrangement with orthogonal pre-pulse, i.e., plasma breakdown in a gas generated by a focussed laser beam parallel and close to the sample surface followed by a delayed crossing laser pulse in orthogonal direction which actually ablates material from the sample and produces the LIBS plasma. The optical emission of the LIBS plasma as well as the absorption of the pre-pulse laser was measured. In the presence of particles in the focus of the pre-pulse laser, the plasma breakdown is affected and more energy of the pre-pulse laser is absorbed than without particles. As a result, the analyte line emission from the LIBS plasma of the second laser is enhanced. It is assumed that the enhancement is not only due

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Author

Helmut Lindner; Kristofer H. Loper; David W. Hahn; Kay Niemax

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0584-8547)

Published

2011

Language

EN

Field

Chemistry (Physical Sciences)