Search

Your search keyword '"Acquaviva, S"' showing total 149 results
Start Over Author "Acquaviva, S"
149 results on '"Acquaviva, S"'

32. Atomic and molecular emissions of the laser-induced plasma during zinc and zinc oxide target ablation.

Author

Acquaviva, S., D’Anna, E., and De Giorgi, M. L.

Subjects
*LUMINESCENCE, *PLASMA dynamics, *ZINC oxide, *LASER ablation, *EXCIMER lasers, *PLASMA gases
Abstract

Optical emission spectroscopic investigations of the plasma produced during KrF excimer laser ablation of Zn and ZnO targets, in vacuum and in oxygen gas environment, are presented. The plume luminescence is mainly due to Zn excited atoms and ions, but the contribution of atomic and molecular oxygen, as well as of particulates, cannot be neglected. In particular, we detect emissions in the spectral regions around 380 and 530 nm, corresponding to the UV and green photo-luminescence bands of the zinc oxide. Moreover, we study the temporal evolution of atomic and ionic ejected species by space- and time-resolved spectroscopy and analyze the results by means of empirical models, in order to infer information about plasma dynamics. [ABSTRACT FROM AUTHOR]

Published
2007
Full Text
View/download PDF

34. Laser-induced breakdown spectroscopy for compositional analysis of multielemental thin films

Author

Acquaviva, S, D'Anna, E, De Giorgi, M, Moro, F, Acquaviva, S., D'Anna, E., De Giorgi, M. L., Moro, F., Acquaviva, S, D'Anna, E, De Giorgi, M, Moro, F, Acquaviva, S., D'Anna, E., De Giorgi, M. L., and Moro, F.

Abstract

The laser-induced breakdown spectroscopy technique is employed for compositional analyses of thin films produced by pulsed laser ablation of multielemental targets. Information about the atomic concentration of the chemical species from the irradiated target is inferred by means of the optical emission spectra of the plasma generated during laser ablation. The atomic concentration percentages and the atomic concentration ratios of the elements of Co-based magnetic alloy targets are deduced from the integrated intensities of selected emission lines of the alloy components. The experimental results show that Co atomic percentage concentration and CSi/CCoand CCr/CCoatomic concentration ratios are in agreement with the corresponding values obtained by traditional compositional analysis techniques. On the contrary, Si atomic percentage concentration values are in disagreement, since the used emission lines have significant self-absorption values. Therefore, the work proves that laser-induced breakdown spectroscopy is adequate for elemental concentration measurements provided an accurate choice of the emission lines. © 2006 Elsevier B.V. All rights reserved

Published
2006

39. Pulsed Laser Deposition of Thin Films on Large Substrates

Author

ACQUAVIVA S, FERNÁNDEZ M, LUCHES A, PERRONE, Alessio, LEGGIERI, Gilberto, MARTINO, Maurizio, V.I. PUSTOVOY, V.I.KONOV, Acquaviva, S, Fernández, M, Leggieri, Gilberto, Luches, A, Martino, Maurizio, and Perrone, Alessio

Published
2000

40. Excimer Laser Ablation Deposition of Carbon Nitride Thin Films

Author

ACQUAVIVA S, D'ANNA E, DE GIORGI, Maria Luisa, LUCHES A, MAJNI A, MARTINO, Maurizio, PERRONE, Alessio, ZEMEK J, ZOCCO A., LEGGIERI, Gilberto, P.VINCENZINI, Acquaviva, S, D'Anna, E, DE GIORGI, Maria Luisa, Leggieri, Gilberto, Luches, A, Majni, A, Martino, Maurizio, Perrone, Alessio, Zemek, J, and Zocco, A.

Published
1999

41. Carbon Nitride Films Deposited by High-Fluence Laser Ablation

Author

ACQUAVIVA S, LUCHES A, ZOCCO A, BARUCCA G, MENGUCCI P., D'ANNA, Emilia, DE GIORGI, Maria Luisa, LEGGIERI, Gilberto, MARTINO, Maurizio, PERRONE, Alessio, A.I.V. ASSOCIAZIONE ITALIANA VUOTO, Acquaviva, S, D'Anna, Emilia, DE GIORGI, Maria Luisa, Leggieri, Gilberto, Luches, A, Martino, Maurizio, Perrone, Alessio, Zocco, A, Barucca, G, and Mengucci, P.

Published
1998

Catalog

Books, media, physical & digital resources
See catalog results