Publications

2010

• Dynamics of wave-number spectrum of plasma turbulence
  
  • Gürcan Özgür D.
  • Hennequin Pascale
  • Vermare Laure
  • Casati A.
  • Falchetto G.
  • Garbet X.
  • Bourdelle C.
  • Diamond P.H.
  , 2010 (TH-C-P8-02).
• On Plasma Rotation with Toroidal Magnetic Field Ripple and no External Momentum Input
  
  • Fenzi C.
  • Garbet X.
  • Trier Elisée
  • Hennequin Pascale
  • Bourdelle C.
  • Aniel T.
  • Colledani G.
  • Devynck P.
  • Gil C.
  • Gürcan Özgür D.
  • Schneider M.
  • Ségui J.-L.
  • Tore Supra Team The
  , 2010 (EX/3-4).
• ETUDE THEORIQUE ET EXPERIMENTALE D'UNE MICRO DECHARGE A CATHODE CREUSE A PRESSION INTERMEDIAIRE DANS L'ARGON
  
  • Lazzaroni Claudia
  , 2010. Les microplasmas correspondent à des décharges confinées sur de faibles échelles spatiales (typiquement quelques 100 µm) offrant ainsi une grande stabilité pour des densités de puissance de l'ordre de 100 kW/cm3. L'étude de ces décharges s'est fortement développée à partir du début des années 2000 tant sur le plan théorique qu'expérimental. Leur intérêt réside dans la possibilité de générer des plasmas à moyenne et haute pression avec de faibles tensions et dans les nombreuses applications potentielles telle que le traitement de surface, les sources de lumière ou bien encore la micro-propulsion spatiale. Les microdécharges à cathode creuse (MHCD) constituent une configuration particulière de microplasmas. La décharge est générée dans l'argon en appliquant une différence de potentiels entre les deux électrodes qui sont assemblées sous forme d'un sandwich électrode-diélectrique-électrode percé sur toute la longueur par un trou de quelques centaines de micromètres. D'un point de vue expérimental, une étude par imagerie et spectroscopie d'émission nous a permis de déterminer les mécanismes d'émission de la lumière, la structure de la décharge, la température du gaz ainsi que la densité électronique. D'un point de vue théorique, nous avons développé des modèles semi-analytiques permettant d'obtenir des lois d'échelle et des comportements macroscopiques, et de vérifier ainsi les interprétations expérimentales. Malgré le nombre important d'hypothèses et d'approximations sur lesquelles reposent les différents modèles développés, la comparaison entre résultats théoriques et expérimentaux nous a permis de capter une partie de la physique impliquée au sein des MHCD.
• Impact of collisionality on fluctuation characteristics of micro-turbulence
  
  • Vermare Laure
  • Hennequin Pascale
  • Gürcan Özgür D.
  • Bourdelle C.
  • Clairet F.
  • Garbet X.
  • Sabot R.
  • Tore Supra Team
  , 2010 (EX-C_P8-19).
• Electron densities and temperatures in a Cl<SUB>2</SUB>/Ar ICP
  
  • Booth Jean-Paul
  • Sarot Rodolphe
  • Despiau-Pujo Emilie
  • Chabert Pascal
  • Gatilova L.
  • Bouchoule S.
  , 2010.
• Model of the dynamics of the self-pulsing regime in a MHCD in argon
  
  • Lazzaroni Claudia
  • Chabert Pascal
  • Rousseau Antoine
  , 2010. oral
• GAS BREAKDOWN IN RF AND LONGITUDINAL COMBINED ELECTRIC FIELDS
  
  • Lisovskiy V. A.
  • Booth Jean-Paul
  • Yegorenkov V. D.
  • Kharchenko N. D.
  , 2010.
• Reactivity of atoms adsorbed on catalytic surfaces under plasma exposure
  
  • Marinov Daniil
  • Guaitella Olivier
  • Rousseau Antoine
  • Roepcke J.
  • Guerra V.
  • Pintassilgo C.D.
  , 2010.
• Control of the plasma potential in strong electronegative plasmas and ion-ion plasmas
  
  • Popelier Lara
  • Aanesland Ane
  • Chabert Pascal
  , 2010.
• Control of Microcrystalline Silicon Deposition by RF Waveform Tailoring
  
  • Johnson E.V.
  • Booth Jean-Paul
  • Vanel J-C
  • Verbeke T.
  , 2010.
• Sheath and electron density dynamics in a micro hollow cathode discharge in argon
  
  • Lazzaroni Claudia
  • Chabert Pascal
  • Rousseau Antoine
  • Sadeghi N.
  , 2010.
• A parametric study of the stratification of electronegative plasmas and the formation of ion-ion plasmas due to magnetic filtering
  
  • Bredin Jérôme
  • Délivré Quentin
  • Aanesland Ane
  • Chabert Pascal
  , 2010.
• Axially-propagating millimetric electron density fluctuations in the Hall thruster plasma
  
  • Tsikata Sedina
  • Lemoine N.
  • Honoré Cyrille
  • Grésillon D.
  , 2010.
• Kinetics of pulsed DC discharge in N2/O2/NxOy mixtures studied by quantum cascade laser absorption spectroscopy
  
  • Marinov Daniil
  • Hübner M.
  • Guaitella Olivier
  • Roepcke J.
  • Rousseau Antoine
  , 2010.
• 3D spectra of subproton scales in the solar wind
  
  • Sahraoui Fouad
  • Goldstein M. L.
  • Belmont Gérard
  • Khotyaintsev Y. V.
  • Kiyani K. H.
  • Robert Patrick
  • Canu Patrick
  , 2010.
• Interaction of magnetic clouds with the magnetospheric boundaries: bow shock and magnetopause
  
  • Fontaine Dominique
  , 2010. Magnetic clouds are magnetic structures ejected from the Sun at higher speed than the ambient solar wind. They are generally responsible for large disturbances in the Earths environment: magnetosphere compression, triggering of geomagnetic storms. In the literature, their geo-effectiveness is studied by comparing magnetic field and plasma observations in magnetic clouds with the Dst index as a proxy for the intensity of geomagnetic storms. We focus here on an intermediate step of this process which is the interaction of the magnetic cloud with the bow shock and with the magnetopause. In order to do it, we exploit observations upstream in the solar wind (ACE, WIND, ) and observations at the crossing of the bow shock and of the magnetopause by CLUSTER. We propose to quantify the variation of characteristic field and plasma parameters of magnetic clouds across these boundaries and the motion of these boundaries.
• Comparison of the Use of SQUID and Hall Effect Sensors in Nondestructive Testing
  
  • Bettaieb Laroussi
  • Kokabi Hamid
  • Poloujadoff Michel
  • Sentz Adrien
  • Krause Hans-Joachim
  • Coillot Christophe
  Materials Evaluation, American Society for Nondestructive Testing, 2010, 68 (5), pp.535-541. In equipment for nondestructive testing using eddy currents, two magnetic sensors (Hall effect and SQUID) have been tested and compared. In parallel with experiments, a simple and efficient numerical analysis was developed. The two sensors were shown to be real competitors, since each has advantages and drawbacks. The numerical model also proved to be quite reliable.
• Reflection of SolarWind protons on the Martian Bow shock: Investigation by means of 3-dimensional simulations
  
  • Richer Emilie
  • Modolo Ronan
  • Chanteur Gérard
  • Dubinin E.
  , 2010, 5, pp.EPSC2010-908. Having run a self-consistent three-dimensional simu- lation of the Martian bow shock we subsequently in- vestigate the reflection of solar wind protons on the planetary bow shock by means of test particles mov- ing in the stationnary electromagnetic field generated during the self-consistent simulation. This two-step approach allows to identify reflected particles without impeding the main stream of computation during the self-consistent run.
• Capillary discharge for laser beam guiding
  
  • Arantchouk Léonid
  • Rechatin C.
  • Lundh O.
  • Faure J.
  • Larour Jean
  • Malka V.
  , 2010, pp.208-211. Book of Proceedings
• A renormalized quasi-linear approach to turbulent transport in tokamaks
  
  • Gürcan Özgür D.
  • Casati A.
  • Vermare Laure
  • Ottaviani M.
  • Bourdelle C.
  • Hennequin Pascale
  • Sarazin Y.
  • Allfrey S.
  • Garbet X.
  • Diamond P.H.
  , 2010 (oral).
• Impact of collisionality on fluctuations characteristics of micro-turbulence
  
  • Vermare Laure
  • Hennequin Pascale
  • Gürcan Özgür D.
  • Honoré Cyrille
  • Bourdelle C.
  • Clairet F.
  • Fenzi C.
  • Garbet X.
  • Sabot R.
  • Tore Supra Team
  , 2010.
• Real Time On-board Determination of Ion Composition from Time of Flight Plasma Spectrometer measurements
  
  • Berthelier Jean-Jacques
  • Verdeil C.
  • Delcourt D.
  , 2010, 5, pp.EPSC2010-699.
• STUDY OF SHAPE EFFECT IN WOUNDED SANDWICH GIANT MAGNETOIMPEDANCE
  
  • Coillot Christophe
  • Moutoussamy Joël
  • Ikhlef R.
  • Chanteur Gérard
  • Alves Francisco
  , 2010. Giant Magneto Impedance (GMI) sensors use impedance variation provoked by an external magnetic field. The purpose of this paper is to study the shape effect in wounded GMI sandwich by means of demagnetizing field coefficient computation and his contribution on intrinsic sensitivity magnitude. We first discuss analytic expression of wounded GMI impedance next, and then we derive analytic modelling of intrinsic sensitivity. Finally we compare the theoretical modelling with experimental results taking into account shape effect.
• Modelling of chlorine inductive discharges
  
  • Chabert Pascal
  • Despiau-Pujo Emilie
  , 2010.
• Carbon nanotubes decorated with gold, platinum and rhodium clusters by injection of colloidal solutions into the post-discharge of an RF atmospheric plasma
  
  • Claessens N
  • Demoisson F
  • Dufour Thierry
  • Mansour Ali
  • Felten A
  • Guillot J
  • Pireaux J-J
  • Reniers F
  Nanotechnology, Institute of Physics, 2010, 21, pp.385603 (6pp). In this paper, we present a new, simple, robust and efficient technique to decorate multi-wall carbon nanotubes (MWCNT) with metal nanoparticles. As case studies, Au, Pt and Rh nanoparticles are grafted onto MWCNTs by spraying a colloidal solution into the post-discharge of an atmospheric argon or argon/oxygen RF plasma. The method that we introduce here is different from those usually described in the literature, since the treatment is operated at atmospheric pressure, allowing the realization in only one step of the surface activation and the deposition processes. We demonstrate experimentally that the addition of oxygen gas in the plasma increases significantly the amount of grafted metal nanoparticles. Moreover, TEM pictures clearly show that the grafted nanoparticles are well controlled in size. (Some figures in this article are in colour only in the electronic version) (10.1088/0957-4484/21/38/385603)
  DOI : 10.1088/0957-4484/21/38/385603