Articles: | |
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Materials Chemistry and Physics,
117(1):268-275
2009
Equipe: Département P2M : Nanomagnétisme et Electronique de Spin |
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Materials chemistry and physics,
117(1):268-275
2009
Equipe: Département CP2S : Matériaux Carbonés |
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Journal of Applied Physics,
105(9):093306 (8pp)
2009
Equipe: Département CP2S : Expériences et Simulations des Plasmas Réactifs - Interaction plasma-surface et Traitement des Surfaces ESPRITS |
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JOURNAL OF APPLIED PHYSICS,
105(9)
2009
ISSN: 0021-8979
Resume: Filamentation in an argon plasma is studied using a microwave cavity at atmospheric pressure. We show that the size and gas temperature of the filaments increase with the power absorbed by the plasma. The appearance of an additional filament occurs at specific values of the absorbed power. Each new filament appears with a smaller diameter than that of its parent filament but the sum of the diameters of all filaments evolves linearly with the absorbed power. A secondary filament emerges from a set of microfilaments created by a perturbation of the electric field (a slight increase in the incident power above a threshold value). This perturbation occurs over a larger radius than that of the parent filament. By resorting to modeling, we found that the filamentation process involves either a decrease in the effective frequency for momentum-transfer collisions, i.e., a lower electron temperature, or an increase in the electron density. We could show that a small change in the relative positions occupied by two filaments in the microwave cavity requires a strong variation in the electron temperature. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3125525] Equipe: Centre de Compétences : ERMIONE informatique et calcul |
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Plasma Processes and Polymers,
6:S187-S192
2009
Equipe: Département CP2S : Expériences et Simulations des Plasmas Réactifs - Interaction plasma-surface et Traitement des Surfaces ESPRITS |
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EPJ Applied Physics,
47(1)
2009
Equipe: Centre de Compétences : MiNaLor micro et nanotechnologies |
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Physica E: Low-Dimensional Systems and Nanostructures,
41(6):998-1001
2009
Equipe: Département P2M : Nanomagnétisme et Electronique de Spin |
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Physica E: Low-Dimensional Systems and Nanostructures,
41(6):998-1001
2009
Equipe: Centre de Compétences : MiNaLor micro et nanotechnologies |
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Applied Physics Letters,
95(11)
2009
Equipe: Département P2M : Nanomagnétisme et Electronique de Spin |
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Applied Physics Letters,
95(11)
2009
Equipe: Centre de Compétences : MiNaLor micro et nanotechnologies |