X-Ray Fluorescence and Laser-Induced Breakdown Spectroscopy analysis of Roman silver denarii
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- 作者：L. Pardini ; A. El Hassan ; M. Ferretti ; A. Foresta ; S. Legnaioli ; G. Lorenzetti ; E. Nebbia ; F. Catalli ; M.A. Harith ; D. Diaz Pace ; F. Anabitarte Garcia ; M. Scuotto ; V. Palleschi
- 关键词：Spectroscopy ; LIBS ; XRF ; Archeometry ; Numismatics
- 刊名：Spectrochimica Acta Part B: Atomic Spectroscopy
- 出版年：2012
- 出版时间：August-September, 2012
- 年：2012
- 卷：74-75
- 期：Complete
- 页码：156-161
- 全文大小：974 K
文摘
In this paper we present the results of a study performed on a large collection of silver Roman republican denarii, encompassing about two centuries of history. The joint use of Laser-Induced Breakdown Spectroscopy (LIBS) and X-Ray Fluorescence (XRF) spectroscopy allowed for an accurate determination of the coins' elemental composition; the measurements, performed mostly in situ at the ¡®Monetiere¡¯ in Florence, revealed a striking connection between the ¡®quality¡¯ of the silver alloy and some crucial contemporary events. This finding was used to classify a group of denarii whose dating was otherwise impossible. The comparison with other contemporary denarii disproves a recent theory on the origin of the so called ¡®serrated¡¯ denarii (denarii showing notched chisel marks on the edge of the coin).