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Dynamic space charge structures in high fluence laser ablation plumes

S. GURLUI1,* , M. SANDULOVICIU1, M. STRAT1, G. STRAT2, C. MIHESAN3, M. ZISKIND3, C. FOCSA3

Affiliation

  1. Al. I. Cuza University of Iasi, Faculty of Physics, B-dul Carol I Nr 11, Iasi, RO-6600, Romania
  2. Gh. Asachi Technical University of Iasi, Department of Physics, B-dul Carol I Nr 10, Iasi, RO-6600, Romania
  3. Laboratoire de Physique des Lasers, Atomes et Molécules (UMR 8523), Centre d’Etudes et de Recherches Lasers et Applications (FR 2416), Université des Sciences et Technologies de Lille, 59655 Villeneu

Abstract

The formation and dynamics of the space charge structures have been studied by means of multiple Langmuir probes in a laser ablation plume produced by high fluence ns laser ablation of a copper target. Based on the analysis of the temporal evolution and angular distribution of ionic densities, a schematic view of space charge structure dynamics is proposed. The observation of periodic osci lations in the MHz range suggests the presence of a self-organization process..

Keywords

Laser ablation, Self-organization, Plasma plume.

Submitted at: Oct. 14, 2005
Accepted at: Jan. 26, 2006

Citation

S. GURLUI, M. SANDULOVICIU, M. STRAT, G. STRAT, C. MIHESAN, M. ZISKIND, C. FOCSA, Dynamic space charge structures in high fluence laser ablation plumes, Journal of Optoelectronics and Advanced Materials Vol. 8, Iss. 1, pp. 148-151 (2006)