Detection of counterfeit Philippine currency via LIBS

Authors

John Christopher G. Nadora ⋅ PH National Institute of Physics, University of the Philippines Diliman
John Paul R. Rotap ⋅ PH National Institute of Physics, University of the Philippines Diliman
Eloieda Stephanie B. Famador ⋅ PH National Institute of Physics, University of the Philippines Diliman
Wilson O. Garcia ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

Laser-induced breakdown spectroscopy (LIBS) was used to determine the elemental composition of magnetic and nonmagnetic metal alloy samples. The metal alloys are coins composed of ring and core sections. A pulsed Nd:YAG laser at 1064nm was used as the excitation source. An observed peak at 375nm attributed to iron is present only on spectra of magnetic samples. Confirmed elemental composition of the samples affirmed the presence of iron in the magnetic alloys. LIBS can be used as a non-destructive technique in differentiating magnetic counterfeit coins from non-magnetic genuine coins.

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Issue

2008: Proceedings of the 26th Samahang Pisika ng Pilipinas Physics Congress

Article ID

SPP-2008-3B-03

Section

Optics and Plasma Physics

Published

2008-10-22

How to Cite

[1]

JCG Nadora, JPR Rotap, ESB Famador, and WO Garcia, Detection of counterfeit Philippine currency via LIBS, Proceedings of the Samahang Pisika ng Pilipinas 26, SPP-2008-3B-03 (2008). URL: https://proceedings.spp-online.org/article/view/SPP-2008-3B-03.