Advanced model for the interaction of a Ti plume produced by a ns-pulsed laser in a nitrogen environment
| Autor: | Giuseppe Pascazio, Gianpiero Colonna, Francesco Bonelli |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Kinetics chemistry.chemical_element 01 natural sciences LIBS Non-equilibrium Plume modeling Titanium target Vibrational kinetics Analytical Chemistry law.invention symbols.namesake law 0103 physical sciences Physics::Chemical Physics Instrumentation Spectroscopy 010302 applied physics 010401 analytical chemistry Plasma Laser Nitrogen Atomic and Molecular Physics and Optics 0104 chemical sciences Pulse (physics) Plume chemistry Molecular vibration Boltzmann constant symbols Atomic physics |
| Zdroj: | Spectrochimica acta. Part B, Atomic spectroscopy 179 (2021): 106120-1–106120-8. doi:10.1016/j.sab.2021.106120 info:cnr-pdr/source/autori:Colonna G.; Pascazio G.; Bonelli F./titolo:Advanced model for the interaction of a Ti plume produced by a ns-pulsed laser in a nitrogen environment/doi:10.1016%2Fj.sab.2021.106120/rivista:Spectrochimica acta. Part B, Atomic spectroscopy/anno:2021/pagina_da:106120-1/pagina_a:106120-8/intervallo_pagine:106120-1–106120-8/volume:179 |
| DOI: | 10.1016/j.sab.2021.106120 |
| Popis: | The expansion of a titanium plume evaporated by a ns laser pulse and expanding in nitrogen environment has been investigated by means of a numerical model. The 2D fluid dynamic equations have been coupled with a chemical model implementing the state-to-state kinetics of nitrogen molecules, focusing on the role of molecular vibration in the plasma evolution. The calculated vibrational distributions considerably depart from the Boltzmann one, showing overpopulated tails. Large differences with results obtained considering macroscopic models have been predicted. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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