Browsing by Author "Silvemini, F"

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    A neutron tomographic analysis of plated silver coins from ancient Greece official or illegal?
    (Materials Research Forum LLC, 2020-05-01) Olsen, SR; Silvemini, F; Luzin, V; Garbe, U; Avdeev, M; Davis, J; Sheedy, K
    This study focuses on a neutron tomographic analysis conducted on a set of plated silver coins minted in the city-state of Athens and in the Greek colonies of Kroton and Metapontum (South Italy or Magna Graecia) during the 6th and 5th centuries BC. The investigation aims to define the plating method by characterising the morphological and structural features of the specimens, i.e. the volume fraction of metallic and non-metallic components, and thickness maps of the plating and porosity. The status of these coins is uncertain: were they official issues authorized by state-authorities during periods of trouble (and silver shortages in the public treasury) or the product of ancient or modern counterfeiters? © 2020 by the author(s). Creative Commons 3.0