Ablation de ZnO par laser UV (193 nm) : Nano-agrégats en phase gazeuse. - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal de Physique IV Proceedings Année : 2003

Ablation de ZnO par laser UV (193 nm) : Nano-agrégats en phase gazeuse.

Résumé

The condensation of zinc oxide nano clusters produced in gas phase has been evidenced in the ablation of a ZnO solid target by a pulsed ArF laser. We compare the spatio-temporal evolution of the shape of ZnO ablated plasma plume, both in vacuum and in controlled gas environments (Helium and/or Oxygen) from monitoring with CCD camera and from spectroscopic studies. The expansion of the plasma plume and the growth of the nanoclusters depend strongly upon the collisions between the ablated particles and surrounding gas molecules, as well as on the chemical reactions in the case of oxygen. The spectra of the observed plasma emittion are mainly due to atomic transitions in the neutral Zn. We have also observed the photoluminescence of the nanoclusters suspended in the gas and their decomposition in the beam of ArF laser.
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Dates et versions

hal-00000832 , version 1 (13-11-2003)

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Igor Ozerov, Alexander V. Bulgakov, Dimitri K. Nelson, Ricardo Castell, Marc Sentis, et al.. Ablation de ZnO par laser UV (193 nm) : Nano-agrégats en phase gazeuse.. Journal de Physique IV Proceedings, 2003, 108, pp.37. ⟨10.1051/jp4:20030591⟩. ⟨hal-00000832⟩
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