http://www.cnr.it/ontology/cnr/individuo/prodotto/ID179903
Experimental and theoretical investigations of femtosecond laser ablation of aluminum in vacuum (Articolo in rivista)
- Type
- Label
- Experimental and theoretical investigations of femtosecond laser ablation of aluminum in vacuum (Articolo in rivista) (literal)
- Anno
- 2005-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1063/1.2032616 (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- S. Amoruso; R. Bruzzese; M. Vitiello; N. N. Nedialkov; P. A. Atanasov (literal)
- Pagina inizio
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
- Selezionato da Virtual Journal of Ultrafast Science nel numero di Settembre 2005 (http://vjultrafast.aip.org/dbt/dbt.jsp?KEY=VIRT05&Volume=4&Issue=9) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
- http://jap.aip.org/resource/1/japiau/v98/i4/p044907_s1 (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
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Coherentia-Istituto Nazionale per la Fisica della Materia (INFM) and Dipartimento di Scienze Fisiche,
Università degli Studi di Napoli Federico II, Complesso Universitario di Monte S. Angelo,
I-80126 Napoli, Italy
Institute of Electronics, Bulgarian Academy of Sciences, 72, Tsaridradsko shose Boulevard,
Sofia 1784, Bulgaria (literal)
- Titolo
- Experimental and theoretical investigations of femtosecond laser ablation of aluminum in vacuum (literal)
- Abstract
- We used time-gated optical emission spectroscopy to investigate the characteristics of aluminum
plumes and their vacuum expansion after femtosecond laser ablation at different fluences. The
prominent feature is the presence of two main classes of species in the plume: very fast Al atoms and
ions preceding the plume bulk essentially constituted of much slower Al nanoparticles expanding
with a ten times smaller average velocity. Atomic force microscopy of deposited Al nanoparticles
evidenced an average size of about 10 nm with a pretty narrow size distribution. These results and
the peculiar feature of nanoparticle formation during femtosecond laser irradiation of matter were
very satisfactorily interpreted and reproduced by molecular-dynamics simulation of the process.
Finally, the analysis of the dependence on laser fluence of the ablation process showed an initial
logarithmic increase of ablation yield, up to about 500 mJ/cm2, followed by a sudden and very steep
increase at higher fluences. According to our numerical calculations, this latter feature can be
ascribed to the increase of the overheated material volume due to electron heat diffusion. (literal)
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