Observation of species distribution in laser induced plasma

C. W. An, Y. F. Lu, Y. W. Goh, E. Tan

Research output: Contribution to journalArticle

13 Scopus citations

Abstract

The species distribution and evolution in laser induced plasma are optically studied by using time-of-flight spectra extracted from time-resolved spectra and newly introduced space-of-flight spectra extracted from space-resolved spectra. The plasma consists many ionic and atomic species. At the head of the plasma plume, ions are always the dominant species. However, there are two distribution peaks for the atoms. One is at the head, and another is at the tail of the plume. If the laser fluence used is high enough, the atoms reside mainly in the tail of the plume. The distribution changes with time and space, which implies an evolution of the species in the course of plasma flying. It is also observed that the proportion of ions to atoms in the plasma decreases with decreasing laser fluence.

Original languageEnglish (US)
Pages (from-to)269-275
Number of pages7
JournalApplied Surface Science
Volume154
DOIs
Publication statusPublished - Feb 1 2000

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ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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