A combined PIXE and XPS analysis has been performed on a few Roman coins of the republican and imperial age. The purpose was to investigate via XPS the nature and extent of patina in order to be capable of extracting PIXE data relative to the coins bulk. The inclusion of elements from the surface layer, altered by oxidation and inclusion, is a known source of uncertainty in PIXE analyses of coins, performed to assess the composition and the provenance.
Combined PIXE and XPS analysis on republican and imperial Roman coins / A. Daccà; P. Prati; A. Zucchiatti; F. Lucarelli; P. A. Mando'; G. Gemme; R. Parodi; R. Pera. - In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION B, BEAM INTERACTIONS WITH MATERIALS AND ATOMS. - ISSN 0168-583X. - STAMPA. - vol.161-163:(2000), pp. 743-747. [10.1016/S0168-583X(99)00965-9]
Combined PIXE and XPS analysis on republican and imperial Roman coins
LUCARELLI, FRANCO;MANDO', PIER ANDREA;
2000
Abstract
A combined PIXE and XPS analysis has been performed on a few Roman coins of the republican and imperial age. The purpose was to investigate via XPS the nature and extent of patina in order to be capable of extracting PIXE data relative to the coins bulk. The inclusion of elements from the surface layer, altered by oxidation and inclusion, is a known source of uncertainty in PIXE analyses of coins, performed to assess the composition and the provenance.
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