Physics – Condensed Matter – Superconductivity
Scientific paper
2003-04-10
Physics
Condensed Matter
Superconductivity
File ARCH_4.pdf 14 pages including 1 table and 5 figures
Scientific paper
10.1088/1367-2630/5/1/399
Meissner fraction in the superconducting state of lead archaeological artifacts is used to evaluate the mass of the uncorroded metal in the sample. Knowing the total mass of the sample the mass of all corrosion products is established. It is shown that this mass correlates with the archaeological age of the lead artifacts over a time span of ~2500 years. Well-dated untreated lead samples from Tel-Dor, the Persian period, Caesarea, the Byzantine and the Crusader periods as well as contemporary data were used to establish the dating correlation. This new chemical dating method is apparently applicable to lead artifacts buried in soils with the pH>6.5. In such soils the corrosion process is very slow and the corrosion products, mainly PbO and PbCO3, accumulate over hundreds of years. The method presented is in principle non-destructive. (corresponding author:
Leitus Gregory
Reich Sebastian
Shalev S.
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