http://www.cnr.it/ontology/cnr/individuo/prodotto/ID53680

Nanosecond and femtosecond Laser Induced Breakdown Spectroscopic analysis of bronze alloys (Articolo in rivista)

Type

Label

Nanosecond and femtosecond Laser Induced Breakdown Spectroscopic analysis of bronze alloys (Articolo in rivista) (literal)

Anno

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

Alternative label

A. Elhassan; A. Giakoumaki; D. Anglos; G.M. Ingo; L. Robbiola; M.A. Harith (2008)
Nanosecond and femtosecond Laser Induced Breakdown Spectroscopic analysis of bronze alloys
in Spectrochimica acta. Part B, Atomic spectroscopy; Pergamon-Elsevier Science Ltd., Oxford (Regno Unito)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

A. Elhassan; A. Giakoumaki; D. Anglos; G.M. Ingo; L. Robbiola; M.A. Harith (literal)

Pagina inizio

Pagina fine

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni

In the present work we are studying the influence of pulse duration (nanosecond (ns) and femtosecond (fs)) at k=248 nm on the laser-induced plasma parameters and the quantitative analysis results for elements such as Sn, Zn and Pb, in different types of bronze alloys adopting LIBS in ambient atmosphere. Binary (Sn-Cu), ternary (Sn-Zn-Cu or Sn-Pb-Cu) and quaternary (Sn-Zn-Pb-Cu) reference alloys characterized by a chemical composition and metallurgical features similar to those used in Roman times, were employed in the study. Calibration curves, featuring linear regression coefficients over 98%, were obtained for tin, lead and zinc, the minor elements in the bronze alloys (using the internal standardization method) as well as for copper, the major element. The effects of laser pulse duration and energy on laser-induced plasma parameters, namely the excitation temperature and the electron density have been studied in our effort to optimize the analysis. Finally, LIBS analysis was carried on three real metal objects and the spectra obtained have been used to estimate the type and elemental composition of the alloys based on the calibration curves produced with the reference alloys. The results obtained are very useful in the future use of portable LIBS systems for in situ qualitative and quantitative elemental analysis of bronze artifacts in museums and archaeological sites. (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

Rivista

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

Note

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

A. Elhassan; M.A. Harith National Institute of Laser Enhanced Science, Cairo University, Giza, Egypt A. Giakoumaki; D. Anglos Institute of Electronic Structure and Laser, Foundation for Research and Technology Hellas (IESL-FORTH), P.O. Box 1385,GR71110 Heraklion, Crete, Greece G.M. Ingo Consiglio Nazionale delle Ricerche, Istituto per lo Studio dei Materiali Nanostrutturati, via Salaria Km 29.5, 00015 Monterotondo, Rome, Italy L. Robbiola Laboratoire de Metallurgie Structurale, CECM CNRS, ENSCP, 11 rue Pierre et Marie Curie, 64120 Paris, cedex 94, France (literal)

Titolo

Nanosecond and femtosecond Laser Induced Breakdown Spectroscopic analysis of bronze alloys (literal)

Abstract

In the present work we are studying the influence of pulse duration (nanosecond (ns) and femtosecond (fs)) at k=248 nm on the laser-induced plasma parameters and the quantitative analysis results for elements such as Sn, Zn and Pb, in different types of bronze alloys adopting LIBS in ambient atmosphere. Binary (Sn-Cu), ternary (Sn-Zn-Cu or Sn-Pb-Cu) and quaternary (Sn-Zn-Pb-Cu) reference alloys characterized by a chemical composition and metallurgical features similar to those used in Roman times, were employed in the study. Calibration curves, featuring linear regression coefficients over 98%, were obtained for tin, lead and zinc, the minor elements in the bronze alloys (using the internal standardization method) as well as for copper, the major element. The effects of laser pulse duration and energy on laser-induced plasma parameters, namely the excitation temperature and the electron density have been studied in our effort to optimize the analysis. Finally, LIBS analysis was carried on three real metal objects and the spectra obtained have been used to estimate the type and elemental composition of the alloys based on the calibration curves produced with the reference alloys. The results obtained are very useful in the future use of portable LIBS systems for in situ qualitative and quantitative elemental analysis of bronze artifacts in museums and archaeological sites. (literal)

Editore