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- Title
The new PIXE-alpha spectrometer for the analysis of Roman nummi surfaces.
- Authors
Pappalardo, L.; Alberti, R.; Calì, C.; Garraffo, S.; Litrico, P.; Pappalardo, G.; Rizzo, F.; Romano, F. P.
- Abstract
The particle-induced X-ray emission (PIXE)-alpha portable spectrometer of the Laboratori Nazionali del Sud has been upgraded to improve X-ray energy resolution and efficiency. A value of 124 eV at Mn Κ α-line and a factor of 3 were, respectively, achieved. These enhanced capabilities allowed the thin surface examination of 5 Roman nummi, in which previous near-surface X-ray fluorescence measurements revealed traces of mercury. In particular, the new version of the PIXE-alpha spectrometer has allowed the distinction of the 2.19 keV Hg M-line from the 2.30 keV S K-line and the 2.34 keV Pb M-line. Subsequent elemental association has demonstrated a correlation between surface mercury and silver. Copyright © 2012 John Wiley & Sons, Ltd.
- Publication
XRS: X-ray Spectrometry, 2013, Vol 42, Issue 1, p33
- ISSN
0049-8246
- Publication type
Article
- DOI
10.1002/xrs.2429