http://www.cnr.it/ontology/cnr/individuo/prodotto/ID34181

Ns- and Fs-LIBS of Copper-Based-Alloys: A Different Approach (Articolo in rivista)

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Ns- and Fs-LIBS of Copper-Based-Alloys: A Different Approach (Articolo in rivista) (literal)

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

Alternative label

De Giacomo A.; Dell'Aglio M.; De Pascale O.; Gaudiuso R.; Teghil R.; Santagata A.; Parisi G.P. (2007)
Ns- and Fs-LIBS of Copper-Based-Alloys: A Different Approach
in Applied surface science; ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS, AMSTERDAM (Paesi Bassi)
(literal)

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

De Giacomo A.; Dell'Aglio M.; De Pascale O.; Gaudiuso R.; Teghil R.; Santagata A.; Parisi G.P. (literal)

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Note

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Università degli Studi di Bari, Dip. Chimica, Via Orabona 4, 70126 Bari, Italy CNR-IMIP, Sezione di Bari, Via Amendola 122/D, 70126 Bari, Italy Università degli Studi della Basilicata, Dip. Chimica, Via N. Sauro 85, 85100 Potenza, Italy CNR-IMIP, Sezione di Potenza, Zona Industriale di Tito Scalo, 85050 Tito Scalo (PZ), Italy (literal)

Titolo

Abstract

A self-calibrated analytical technique, based on plasmas induced by either 250 fs or 7 ns laser pulses, is presented. This approach is comparable to other calibration-free methods based on LTE assumption. In order to apply this method to very different laser pulse durations, the partial-local thermodynamic equilibrium (p-LTE) has been considered within the energy range of 30,000-50,000 cm-1. In order to obtain the neutral species densities, the detected plasma species emission lines intensities have been treated together with the experimental evaluated background black-body Planck-like emission distribution. For validating the followed method, three certified copper-based-alloys standards were employed and their minor components (Ni, Pb and Sn) amounts were determined. As a result, it arises, that this standardless method, independently from the laser source pulse durations, provides good quantitative analysis, and, consequently, that the composition of the plasma plume emitting species induced is not affected by the laser pulse time width. (literal)

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