Identificación de líneas espectrales de emisión atómica de algunos objetos metálicos arqueológicos encontrados en la Iglesia Colonial de Huanchaco, Trujillo, Peru mediante LIBS
No Thumbnail Available
Date
2024
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Universidad Nacional de Trujillo
Abstract
El presente trabajo de investigación tuvo como objetivo armar un sistema experimental para espectroscopía de plasmas inducidos por láser (LIBS) que sea aplicado al análisis de muestras arqueológicas. El sistema LIBS estuvo conformado principalmente por un mini espectrómetro Ocean Insight HR4000 CG-UV-NIR, un láser de Nd: YAG de 1064 nm de longitud de onda y una fibra óptica. Los objetos de estudio fueron tres muestras arqueológicas metálicas encontradas en la iglesia Colonial de Huanchaco, Trujillo-Perú, pertenecientes a la cultura Virú. Se usó una fluencia laser aproximada de 3,5J/cm2 obtenida para una energía del pulso láser de (10,0 ± 0,5)mJ, obteniéndose los espectros LIBS en un medio ambiente de aire, que fueron analizados mediante el software AndesLIBS determinándose que contenían principalmente cobre (Cu I), identificándose las líneas espectrales correspondientes a las longitudes de onda: 324.75 nm, 327.4 nm, 458.7nm, 510.55 nm, 515.32 nm, 521.82 nm, 529.25 nm, y 578.21 nm. Se demostró que este sistema LIBS es útil para la determinación de la composición elemental de muestras arqueológicas metálicas.
Abstract The present work research had as a goal build a experimental system to Laser Induced Breakdown Spectroscopy (LIBS) that was applied to arqueological sample analysis. LIBS system was formed principally by an Ocean Insight HR4000 CG-UV-NIR mi niespectrometer, a Nd:YAG laser of 1064 nm wavelenght and a optical fiber. Study objects were three metallic arqueológical sample found in Colonial Church from Huanchaco, Trujillo Perú, that belonged to Viru Culture. It was used a fluence of 3,5J/cm2 aproximately, obtained for a laser pulse energy of (10,0 ± 0,5) mJ. LIBS espectrum was obtained in an aire medium, Andes LIBS software was used to analized the spectrum and found that the arqueological samples was made principally of copper (CuI). The spectral lines identified were those belonging to the wa velengths of: 324.75 nm, 327.4 nm,458.7 nm, 510.55 nm, 515.32nm, 521.82 nm, 529.25 nm, y 578.21 nm. It was proved that this LIBS system is useful to determined the element compositión of metallic archaeological samples
Abstract The present work research had as a goal build a experimental system to Laser Induced Breakdown Spectroscopy (LIBS) that was applied to arqueological sample analysis. LIBS system was formed principally by an Ocean Insight HR4000 CG-UV-NIR mi niespectrometer, a Nd:YAG laser of 1064 nm wavelenght and a optical fiber. Study objects were three metallic arqueológical sample found in Colonial Church from Huanchaco, Trujillo Perú, that belonged to Viru Culture. It was used a fluence of 3,5J/cm2 aproximately, obtained for a laser pulse energy of (10,0 ± 0,5) mJ. LIBS espectrum was obtained in an aire medium, Andes LIBS software was used to analized the spectrum and found that the arqueological samples was made principally of copper (CuI). The spectral lines identified were those belonging to the wa velengths of: 324.75 nm, 327.4 nm,458.7 nm, 510.55 nm, 515.32nm, 521.82 nm, 529.25 nm, y 578.21 nm. It was proved that this LIBS system is useful to determined the element compositión of metallic archaeological samples
Description
Keywords
Láser Nd:YAG, LIBS, objetos arqueológicos metálicos, Cultura Virú.