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Title: Time-resolved spatial distribution of plasma in the ablation of a Ba₀.₆Sr₀.₄TiO₃ target by 25 ns KrF ultraviolet laser

We performed radially and longitudinally time-resolved plasma analysis during pulsed laser deposition of Ba₀.₆Sr₀.₄TiO₃ thin films. The plasma is shown to be optically thick and strongly non-uniform during the early expansion phase and the resonance line Ba II (455.4 nm) is strongly self-reversed during this time. Plasma temperature and electron density were obtained by comparing experimental emission spectra with the spectral radiance computed for a non-uniform plasma in local thermal equilibrium.
Authors:
; ;  [1] ;  [2]
  1. Groupe de Recherche en Matériaux, microélectronique, Acoustique et Nanotechnologies (GREMAN) - UMR 7347 CNRS-CEA, Université François Rabelais de Tours, Faculté des Sciences and Techniques, Parc Grandmont - bât. E – 37200 Tours (France)
  2. Laboratoire Lasers, Plasmas et Procédés Photoniques (LP3), UMR 6182 CNRS, Aix-Marseille Université, 163 Avenue de Luminy, C. 917 - 13288 Marseille (France)
Publication Date:
OSTI Identifier:
22305739
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 116; Journal Issue: 13; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABLATION; BARIUM COMPOUNDS; ELECTRON DENSITY; ELECTRON TEMPERATURE; EMISSION SPECTRA; ENERGY BEAM DEPOSITION; EXPANSION; ION TEMPERATURE; LASER RADIATION; PLASMA; PULSED IRRADIATION; RESONANCE; SPATIAL DISTRIBUTION; STRONTIUM COMPOUNDS; THERMAL EQUILIBRIUM; THIN FILMS; TIME RESOLUTION; TITANATES; ULTRAVIOLET RADIATION