Identification of British one pound counterfeit coins using laser-induced breakdown spectroscopy

Andrew Appleby, Thangavel Thevar

Research output: Contribution to journalArticle

4 Citations (Scopus)
6 Downloads (Pure)

Abstract

The use of laser-induced breakdown spectroscopy (LIBS) as a low-cost, nondestructive method for detecting counterfeit coins was examined. A pulsed laser was used to evaporate a minute amount of coin surface, and the emanating plasma was interrogated with an entry-level spectrometer. The spectra produced showed evidence of lead content in six of the eight counterfeits examined. Thus, LIBS could offer a viable low-cost technique for identifying a significant number of fake coins.
Original languageEnglish
Article number044104
Pages (from-to)1-7
Number of pages7
JournalOptical Engineering
Volume55
Issue number4
DOIs
Publication statusPublished - 21 Apr 2016

Keywords

  • laser-induced breakdown spectroscopy
  • counterfeit coin detection
  • British one pound coin

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