Non-destructive and \"in-situ\" characterization of gemstones on museum jewels. The complementary use of PIXE-alpha and XRF portable systems (Abstract/Poster in convegno)

Type
Label
  • Non-destructive and \"in-situ\" characterization of gemstones on museum jewels. The complementary use of PIXE-alpha and XRF portable systems (Abstract/Poster in convegno) (literal)
Anno
  • 2004-01-01T00:00:00+01:00 (literal)
Alternative label
  • L. Pappalardo, A. G. Karydas, N. Kotzamani, G. Pappalardo, F. P. Romano and Ch. Zarkadas (2004)
    Non-destructive and "in-situ" characterization of gemstones on museum jewels. The complementary use of PIXE-alpha and XRF portable systems
    in Archaeometry with IBA and related methods, Lubiana, 9-10 Giugno 2004
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • L. Pappalardo, A. G. Karydas, N. Kotzamani, G. Pappalardo, F. P. Romano and Ch. Zarkadas (literal)
Note
  • Abstract (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (a) INFN, Laboratori Nazionali del Sud, LANDIS, Via S. Sofia 44, 95123 Catania, Italy (b) CNR, Sezione di Catania dell'Istituto per i Beni Archeologici e Monumentali, Via A. di Sangiuliano 62, 95100 Catania, Italy (c) Institute of Nuclear Physics, NCSR \"Demokritos\", Ag. Paraskevi, Athens 153 10, Greece (d) Benaki Museum, 1 Koumbari Street, Athens 106 74, Greece (e) Università di Catania, Dipartimento di Fisica a Astronomia, Viale A. Doria 6, 95125 Catania, Italy (literal)
Titolo
  • Non-destructive and \"in-situ\" characterization of gemstones on museum jewels. The complementary use of PIXE-alpha and XRF portable systems (literal)
Abstract
  • Gemstones on gold Hellenistic (late 4th century B.C., 1st A.D.) jewels, exhibited at the Benaki Museum of Athens, were analyzed \"in situ\" by means of two non-destructive and portable analytical techniques. The composition of major and minor elements has been determined by using the new portable PIXE-alpha spectrometer. This spectrometer, according to its analytical features, allows the determination of matrix elements from Na up to Zn through the K-lines and the determination of higher atomic number elements via the L or M-lines. The analyzed red stones resulted to be red garnets, displaying a compositional range from Mg-rich garnet to Fe-rich garnet. The complementary use of a portable XRF spectrometer has provided additional information on some trace elements (Cr and Y), which are considered to be important for the chemical separation between different garnet groups. A comparison of our results with recent literature data offers useful indications about the possible geographical provenance of the stones. The analytical techniques, their complementarity and the results obtained are presented and discussed. (literal)
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