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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 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Temporal Evolution Study of the Plasma Induced by CO2 Pulsed Laser on Targets of Titanium Oxides Tvůrce(i) Diaz, L. (ES)
Camacho, J.J. (ES)
Sanz, M. (ES)
Hernández, M. (ES)
Jandová, Věra (UCHP-M) RID, ORCID, SAI
Castillejo, M. (ES)Zdroj.dok. Spectrochimica Acta Part B: Atomic Spectroscopy. - : Elsevier - ISSN 0584-8547
Roč. 86, AUG 1 (2013), s. 88-93Poč.str. 6 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova laser induced breakdown spectroscopy ; time-resolved optical emission spectroscopy ; high-power IR CO2 pulsed laser Vědní obor RIV CH - Jaderná a kvantová chemie, fotochemie Institucionální podpora UCHP-M - RVO:67985858 UT WOS 000323298400011 DOI 10.1016/j.sab.2013.06.002 Anotace 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. Pracoviště Ústav chemických procesů Kontakt Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Rok sběru 2014
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