Laser-induced breakdown spectroscopy: flat surface vs. cavity structures

Publication Type
Journal Article
Authors
LBL Report Number
LBNL-56016
Abstract

Cavity formation is a common phenomenon involved in solid-state analysis when repetitive laser pulses are applied to induce breakdown spectra. While previous LIBS investigations have been mostly focused on laser ablation on flat surfaces, the development of a laser-induced plasma inside cavity structures is of both fundamental and practical significance for quantitative chemical analysis using LIBS. In this paper, we attempt to answer the question, to what extent cavity formation would influence the temperature and electron density of laser-induced plasma. We found a significant effect of cavity aspect ratio on plasma characteristics, in particular, the measured high temperature and electron density of laser-induced plasma inside cavity structures.

Notes

LBNL-56016 IN FILE

Journal
J.Anal.Atom.Spectrom.
Volume
19
Year of Publication
2004
Pagination
495-498
Accession Number
157
Keywords
Organizations
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