Compositional Study of Indian Five Rupee Coin by EDXRF Technique
Energy dispersive X-ray Fluorescence technique has been used to study five rupee indian coins of years 1992,1993,1994,1999,2009,2010,2011 and 2012 for their material/ elemental compositions. EDX-720 spectrometer provided with X-ray tube and Si(Li) detector having energy resolution 165 eV at 5.9KeV Mn K X-ray. Different metal compositions like Cupro-Nickel, NickelBrass and Ferritic Stainless-Steel (FSS) with traces of Mn, Cr, S, Si, Cl have been found in present investigation. Modern coins are found with amendment in composition that replaces Cupro-Nickel, Nickel-Brass. Variation in weights of coins have been observed from 9 to 6 gm.
EDXRF: A non-destructive technique for multi-elemental analysis of coins
Eleven silver and twenty-five copper coins of British rule (1857-1947 A.D.) have been studied and their elemental compositions have been estimated using non-destructive and simultaneous multi-elemental EDXRF technique in order to verify the effectiveness of this technique for analysis of coins on routine basis. The computer code AXIL was employed to obtain the elemental concentrations from the EDXRF spectra. The obtained results are presented.
The application of photon, electron and proton induced X-ray analysis for the identification and characterisation of medieval silver coins
Abstract Photons, electrons and protons beams applied to the scientific investigation of archaeological materials provide complementary information for characterising the state of preservation and the provenance of the objects. Investigations were carried out on medieval silver coins of the “Friesacher Pfennig” and the “Tiroler Kreuzer” from the Kunsthistorisches Museum Vienna and the Oesterreichische Nationalbank. Techniques employed were EDXRF, SEM/EDX and PIXE. By determining the trace elements of the alloys it was possible to assign coins to their mint. The results outline advantages and disadvantages of EDXRF, SEM/EDX and PIXE when applied to corroded objects.