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Temporal Evolution Study of the Plasma Induced by CO2 Pulsed Laser on Targets of Titanium Oxides
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SYSNO ASEP 0397650 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Temporal Evolution Study of the Plasma Induced by CO2 Pulsed Laser on Targets of Titanium Oxides Author(s) Diaz, L. (ES)
Camacho, J.J. (ES)
Sanz, M. (ES)
Hernández, M. (ES)
Jandová, Věra (UCHP-M) RID, ORCID, SAI
Castillejo, M. (ES)Source Title Spectrochimica Acta Part B: Atomic Spectroscopy. - : Elsevier - ISSN 0584-8547
Roč. 86, AUG 1 (2013), s. 88-93Number of pages 6 s. Language eng - English Country NL - Netherlands Keywords laser induced breakdown spectroscopy ; time-resolved optical emission spectroscopy ; high-power IR CO2 pulsed laser Subject RIV CH - Nuclear ; Quantum Chemistry Institutional support UCHP-M - RVO:67985858 UT WOS 000323298400011 DOI 10.1016/j.sab.2013.06.002 Annotation This paper reports studies on time-resolved laser induced breakdown spectroscopy (LIBS) of plasmas induced by IR nanosecond laser pulses on the titanium oxides TiO and TiO2 (anatase). LIBS excitation was performed using a CO2 laser. The laser-induced plasma was found strongly ionized yielding Ti+, O+, Ti2+, O2+, Ti3+, and Ti4+ species and rich in neutral titanium and oxygen atoms. The temporal behavior of specific emission lines of Ti, Ti2+ and Ti3+ was characterized. The results show a faster decay of Ti3+ and Ti2+ ionic species than that of Ti+ and neutral Ti atoms. Spectroscopic diagnostics were used to determine the time-resolved electron density and excitation temperatures. Laser irradiation of TiO2-anatase induces on the surface sample the polymorphic transformation to TiO2-rutile. The dependence on fluence and number of irradiation pulses of this transformation was studied by micro-Raman spectroscopy. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2014
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