Journal
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
Volume 268, Issue 10, Pages 1657-1664Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nimb.2010.03.015
Keywords
Laser Ablation and Mass Quadrupole Spectrometry (LAMQS); X-ray Fluorescence (XRF); Laser Induced Breakdown Spectroscopy (LIBS); Scanning Electron Microscopy (SEM); Numismatic; Egyptian coins
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Funding
- Laboratorio di Fisica dei Plasmi Laser of Messina University
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Some Egyptian bronze coins, dated VI-VII sec AD. are analyzed through different physical techniques in order to compare their composition and morphology and to identify their origin and the type of manufacture. The investigations have been performed by using micro-invasive analysis, such as Laser Ablation and Mass Quadrupole Spectrometry (LAMQS), X-ray Fluorescence (XRF), Laser Induced Breakdown Spectroscopy (LIBS), Electronic (SEM) and Optical Microscopy, Surface Profile Analysis (SPA) and density measurements. Results indicate that the coins have a similar bulk composition but significant differences have been evidenced due to different constituents of the patina, bulk alloy composition, isotopic ratios, density and surface morphology. The results are in agreement with the archaeological expectations, indicating that the coins have been produced in two different Egypt sites: Alexandria and Antinoupolis. A group of fake coins produced in Alexandria in the same historical period is also identified. (C) 2010 Elsevier B.V. All rights reserved.
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