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Título

Temporal and spatial evolution of the electronic density and temperature of the plasma produced by laser ablation of LiNbO₃

AutorGordillo Vázquez, Francisco J. ; Perea, Ángel ; Chaos, J. A.; Gonzalo de los Reyes, José; Afonso, Carmen N.
Palabras clave[PACS] Laser ablation
[PACS] Optical (ultraviolet, visible, infrared) measurements
[PACS] Plasma properties
[PACS] Pulsed laser ablation deposition
Fecha de publicación1-ene-2001
EditorAmerican Institute of Physics
CitaciónApplied Physics Letters, 78 (1) :7-9 (2001)
ResumenEmission spectroscopy is used to determine the spatial and temporal evolution of the electronic temperature (Te) and density (Ne) of the plasma generated by laser ablation in vacuum of a LiNbO₃ target. It is found that whereas Ne (in the range of 10¹⁶ cm⁻³) decreases by a factor of 2 as the distance to the target surface increases 10 mm, Te (in the range 0.7–0.8 eV) only decreases 10% between 2 and 4 mm from the target to remain nearly constant for longer distances. While Te is almost constant in time at the studied distances, Ne presents a maximum at a time delay that increases when increasing the distance to the target surface. The space–time constancy of Te is related to a collisional decoupling of the heavy species in the plasma for distances longer than 2–4 mm.
Descripción3 pags. ; 3 figs.
Versión del editorhttp://dx.doi.org/10.1063/1.1335853
URIhttp://hdl.handle.net/10261/51456
DOI10.1063/1.1335853
ISSN0003-6951
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