Spectral researches on interaction of laser radiation with targets from titanium oxides |
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Authors: | V A Shakhatov O A Gordeyev |
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Institution: | (1) Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninskii pr. 29, Moscow, 119991, Russia;(2) Moscow Aviation Institute (State University of Aerospace Technologies), Volokolamskoe sh. 4, Moscow, 125993, Russia |
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Abstract: | Spectral characteristics and kinetic processes of the laser-induced plasma used for the growth of films from titanium oxides were investigated. The experiments were carried out in vacuum, oxygen, and an oxygen radiofrequency discharge plasma and its afterglow. A collision-radiative model describing the state-to-state kinetics of titanium atoms and ions at various stages of flight of laser-induced plasma was proposed. It was shown that the conditions of local thermodynamic equilibrium are disturbed because of a fast gas-dynamic expansion of plasma. Nonetheless, the distribution functions of titanium atoms and ions over excited states are described by the Boltzmann formulas with different temperatures. |
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