Spatial confinement effects in laser-induced breakdown spectroscopy

X. K. Shen, J. Sun, H. Ling, Y. F. Lu

Research output: Contribution to journalArticle

72 Scopus citations

Abstract

The spatial confinement effects in laser-induced breakdown of aluminum (Al) targets in air have been investigated both by optical emission spectroscopy and fast photography. A KrF excimer laser was used to produce plasmas from Al targets in air. Al atomic emission lines show an obvious enhancement in the emission intensity when a pair of Al-plate walls were placed to spatially confine the plasma plumes. Images of the Al plasma plumes showed that the plasma plumes evolved into a torus shape and were compressed in the Al walls. The mechanism for the confinement effects was discussed using shock wave theory.

Original languageEnglish (US)
Article number081501
JournalApplied Physics Letters
Volume91
Issue number8
DOIs
StatePublished - 2007

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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