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X-ray, synchrotron, and neutron diffraction analysis of Roman cavalry parade helmet fragment
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SYSNO ASEP 0350482 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title X-ray, synchrotron, and neutron diffraction analysis of Roman cavalry parade helmet fragment Author(s) Smrcok, L. (SK)
Petrik, I. (SK)
Langer, V. (SE)
Filinchuk, Y. (FR)
Beran, Přemysl (UJF-V) RID, ORCID, SAISource Title Crystal Research and Technology - ISSN 0232-1300
Roč. 45, č. 10 (2010), s. 1025-1031Number of pages 7 s. Language eng - English Country DE - Germany Keywords archaeometry ; Roman helmet ; phase analysis Subject RIV BG - Nuclear, Atomic and Molecular Physics, Colliders CEZ AV0Z10480505 - UJF-V (2005-2011) UT WOS 000283005100005 DOI 10.1002/crat.201000419 Annotation A partially corroded fragment of the neck guard of a Roman cavalry helmet excavated in the former military camp of Gerulata, a part of the Limes Romanus on the River Danube, was analysed by laboratory X-ray, synchrotron and neutron powder diffraction. The approximate phase composition determined by the neutron diffraction of the bulk, 82% (wt) of the copper alloy phase, 12 % (wt) of cuprite and 6% of nantokite indicate a significant degree of corrosion of the artefact. Elemental EDX analysis of cleaned surface showed that the chemical composition of the original alloy is 78 to 82 % (wt) of Cu and 21.4 to 16.5 % of Zn with minute amounts of Sn, Si and S. High contents of Cu and Zn with the negligible amount of Sn showed that the body of the helmet was made of brass and not of bronze as expected before. The amount of zinc in the copper alloy calculated from the refined lattice parameter agrees fairly well with the value determined by EDX. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2011
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