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Publications: Articles

Article

Titre: Impacts created on various materials by micro-discharges in heptane: Influence of the dissipated charge
Auteurs: Hamdan, A., Noel, C., Kosior, F., Henrion, G. and Belmonte, T.
Journal: JOURNAL OF APPLIED PHYSICS
Work type: <span class="tx_bib-type">Article</span>
Annee: 2013
Volume: 113
olabel_issue: 4
AMER INST PHYSICS
Publisher address: CIRCULATION &amp; FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA
Affiliation: Belmonte, T (Reprint Author), Univ Lorraine, Inst Jean Lamour, CNRS, UMR 7198, F-54042 Nancy, France. Hamdan, A.; Noel, C.; Kosior, F.; Henrion, G.; Belmonte, T., Univ Lorraine, Inst Jean Lamour, CNRS, UMR 7198, F-54042 Nancy, France. Noel, C.; Kosior, F.; Henrion, G.; Belmonte, T., Inst Jean Lamour, CNRS, UMR 7198, F-54042 Nancy, France.
Abstract: Modes of energy dissipation in impacts made on various materials (Al, Cu, Fe, and Si) by discharges in heptane are investigated for micro-gap conditions. Bulk metals and thin films of 300 nm in thickness deposited on silicon wafers are used as samples. Positive high voltage pulses with nanosecond rise times make it possible to isolate a single discharge and to study the way the charge delivered by the power supply is transferred to the larger electrode (the sample) in a pin-to-plate configuration. The diameter of the impacts created by the plasma varies linearly versus the charge raised at a power close to 0.5. However, the exact value of the power depends on the material. We also show how the impact morphologies change with the applied charge. At high charges, the diameters of impacts on thin films behave as those made on silicon. At low charges, they behave as the bulk material. Finally, we show that the energy dissipated in impacts is below a few percent. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4780786]
Equipe: Centre de Compétences : ERMIONE informatique et calcul

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