Publications

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Below, by year, are the publications listed in the HAL open archive.

2013

RF measurements in the ferrite-enhanced PEGASES II space thruster prototype : power efficiency and range of operation
- Rafalskyi D.V.
- Aanesland Ane
- Bredin Jérôme
- Chabert Pascal
, 2013.
Inductively-coupled plasmas in pure chlorine: comparison of atom density, electron density and gas temperature measurements with the HPEM hybrid model.
- Booth Jean-Paul
- Sirse Nishant
- Chabert Pascal
- Pruvost B.
- Kushner M.J.
, 2013.
Status on the Project of Laser Based Production, Acceleration and Neutralization of High Power Neutral (H or D) Beam for Demo Application
- Moustaizis Stavros
- Auvray Philippe
- Larour Jean
- Perrakis C.
- Ducret J.-E.
, 2013. communication orale
Generation of High Pulsed magnetic field using low inductance switches
- Auvray Philippe
- Larour Jean
- Moustaizis Stavros
, 2013. On présente plusieurs dispositifs de production de courants intenses (jusqu'à 900 kA sous 30 kV) pour magnétiser des volumes d'interaction laser-matière de quelques cm3 pendant environ 1 µs. L'accent est mis sur la réalisation de deux types d'éclateur à très faible inductance et sur la connexion à une chambre à vide.
Origin of extracted H- ions at different plasma grid bias in caesiated ion sources
- Bacal M.
- Mcadams R.
- Surrey E.
, 2013.
Numerical Evaluation of the Role of Reflectors to Maximize the Power Efficiency of an Axial Vircator (keynote)
- Champeaux Stéphanie
- Gouard Philippe
- Cousin Richard
- Larour Jean
, 2013, pp.4A-High Power Microwaves I. Keynote speech on HPM. The effects of introducing one or more reflectors inside an axial Vircator are analyzed using CST-Particle Studio (TM) PIC simulation. The power conversion efficiency is shown to be enhanced from 1% to 13% at 3 GHz. The optimum output power is obtained with three reflectors. Abstract disponible sur http://www.ivec2013.org/ Texte de 2 pages sur clé USB distribué aux participants mais non public.
Propagation of Plasmas in Liquids
- Rousseau Antoine
, 2013.
Guiding of meter scale AC discharges by laser filamentation in air
- Houard Aurélien
- Brelet Yohann
- Point G.
- Carbonnel Jérôme
- André Y-B.
- Prade Bernard S.
- Arantchouk Léonid
- Mysyrowicz André
, 2013. We report experiments of laser-guided discharges obtained in air with high voltage bursts delivered by a compact Tesla coil. Characteristics of the guided discharges are studied for electrode gaps ranging from 30 to 170 cm.
Plasma column from laser filamentation in air as a virtual radio-frequency antenna
- Point G.
- Brelet Yohann
- Houard Aurélien
- Carbonnel Jérôme
- Arantchouk Léonid
- Prade Bernard S.
- André Y-B.
- Mysyrowicz André
, 2013. We demonstrate the use of a plasma column created by femtosecond filamentation and heated by means of a high-voltage discharge communication orale CD-10.1
Dynamics of Cl<SUB>2</SUB> inductively-coupled plasmas: Role of electronic and vibrational excitation
- Booth Jean-Paul
- Sirse Nishant
- Chabert Pascal
- Indelicato P.
- Surzhykov A.
- Kushner M.J.
, 2013.
Development of plasma and beam diagnostics for the PEGASES thruster experiment
- Rafalskyi D.V.
- Aanesland Ane
, 2013.
A simple high-voltage high current spark gap with subnanosecond jitter triggered by femtosecond laser filamentation
- Arantchouk Léonid
- Houard Aurélien
- Brelet Yohann
- Carbonnel Jérôme
- Larour Jean
- André Yves-Bernard
- Mysyrowicz André
Applied Physics Letters, American Institute of Physics, 2013, 102 (16), pp.162502. We describe a simple, sturdy, and reliable spark gap operating with air at atmospheric pressure and able to switch currents in excess of 10 kA with sub-nanosecond jitter. The spark gap is remotely triggered by a femtosecond laser filament. (10.1063/1.4802927)
DOI : 10.1063/1.4802927
The optimized steerable W-band Doppler reflectometer on ASDEX Upgrade: possibilities and issues
- Happel T.
- Conway G. D.
- Hennequin Pascale
- Honoré Cyrille
- Giacalone J-C.
- Simon P.
- Stroth U.
- Vermare Laure
- Asdex Upgrade Team The
, 2013 (http://www.lptp.polytechnique.fr/News/11/Workshop/papers/Happel_IRW11-paper.pdf).
Doppler backscattering measurements on TCV
- Vermare Laure
- Coda S.
- Hennequin Pascale
- de Meijere K.
- Honoré Cyrille
- Giacalone J-C.
- Tcv Team
, 2013 (oral).
Observation of a poloidal asymmetry of fluctuation perpendicular velocity measured by Doppler backscattering on Tore Supra plasmas
- Storelli A.
- Hennequin Pascale
- Vermare Laure
- Gürcan Özgür D.
- Tore Supra Team
, 2013 (oral).
Geodesic acoustic modes:ffsimultaneous observation of density,ff magnetic-field, and flow componentsff in the TCV tokamak
- Coda S.
- de Meijere K.
- Huang Z.
- Vermare Laure
- Vernay T.
- Vuille V.
- Brunner Stephan
- Dominski J.
- Hennequin Pascale
- Krämer-Flecken A.
- Merlo G.
- Porte L.
, 2013 (oral).
Damping of Geodesic Acoustic Modes.
- Vermare Laure
- Hennequin Pascale
- Gürcan Özgür D.
- Morel Pierre
- Tore Supra Team
, 2013 (oral).
Spatial propagation of turbulence and formation of mesoscopic structures in GK simulations
- Dif-Pradalier Guilhem
- Ghendrih Ph.
- Diamond P.H.
- Garbet X.
- Grandgirard V.
- Palermo F.
- Sarazin Y.
- Strugarek Antoine
- Abitboul J.
- Gürcan Özgür D.
- Hennequin Pascale
- Morel Pierre
- Vermare Laure
, 2013 (http://ttf2013.ucsd.edu/TTF_Meeting/Home.html).
Detection of thin current sheets and associated reconnection in the Earth's turbulent magnetosheath using cluster multi-point measurements
- Chasapis A.
- Retinò Alessandro
- Sahraoui Fouad
- Greco A.
- Vaivads A.
- Sundkvist D.
- Canu Patrick
, 2013, 15, pp.EGU2013-5796.
Suprathermal electron acceleration at reconnection jet fronts and braking regions in the Earth's magnetotail
- Retinò Alessandro
- Vaivads A.
- Zieger B.
- Fujimoto M.
- Kasahara S.
- Nakamura R.
- Chasapis A.
- Fu H.S.
, 2013, 15, pp.EGU2013-5627. Magnetic reconnection is an efficient mechanisms for accelerating charged particles to energies much higher than their thermal energy. Important examples are the solar corona and planetary magnetospheres. A number of recent numerical simulations as well as in situ observations in Earth's magnetotail indicate that strong acceleration occurs at reconnection jet fronts, the boundary separating jetting from ambient plasma, and in jet braking regions, where jets eventually stop/dissipate. Yet the details of the acceleration mechanisms are not fully understood. Here we present a few examples of jet fronts/braking regions and associated suprathermal electron acceleration in the Earth's magnetotail, by using Cluster spacecraft data. We discuss the properties of accelerated electrons and electromagnetic fields for both jet front and jet braking regions.
A 3D parallel model of Ganymede's exosphere
- Leclercq Ludivine
- Turc Lucile
- Leblanc François
- Modolo Ronan
, 2013, pp.EGU2013-9679. Ganymede is a unique object : it is the biggest moon of our solar system, and the only satellite which has its own intrinsic magnetic field. Its surface is covered by water ice and by regolith. Some previous observations suggest that below its surface may exist an ocean of liquid water. The atmosphere of the planet is poorly known but should be composed essentially of water, hydrogen and oxygen (Marconi et al., Icarus, 2007). These atmospheric particles mainly originate from the surface thanks to sublimation of water-ice and sputtering, a process driven by the magnetospheric Jovian particles impacting Ganymede surface and leading to ejection of atoms and molecules into Ganymede atmosphere. We developed a model of Ganymede's atmosphere based on a 3D Monte Carlo description of the fate of the ejected particles from the surface. This model has been parallelized allowing a much better statistical, spatial and temporal description of Ganymede's environment. This model includes the main sources of the neutral atmosphere and is able to calculate all its characteristics. It was successfully compared to the few known observations as well as to previous modeling. In this presentation, we will present the main characteristics of this model and what it tells us on Ganymede's atmosphere, in terms of spatial structure, composition, temporal variability and relations with both magnetosphere and surface.
From 1AU solar wind turbulence backward to coronal turbulence: an inverse problem
- Dong Yue
- Verdini Andrea
- Grappin Roland
, 2013, 15, pp.3285. This work deals with the formation of the low-frequency spectrum of solar wind turbulence, including the so-called inertial range and the lower frequency 1/f range. Much is known on the turbulent state of the solar wind plasma at distances larger than 0.3 AU, but few is known on the turbulent state of the plasma at the sources of the wind, like the coronal plasma. Characterizing the turbulence state of plasma in the solar corona is thus an inverse problem. To solve this inverse problem, we use the MHD expanding box model, which consists in incorporating in the MHD equations the effects of expansion on a turbulent plasma volume advected by a wind with constant (radial) velocity, by using comobile coordinates. In spite of its limitations (assumption of constant expansion), the model includes the basic effects of expansion (i) anisotropic damping of velocity and magnetic field (ii) weakening of nonlinear coupling in the perpendicular directions. The code allows in particular to follow the 3D turbulent evolution of the kinetic and magnetic energy spectra. We present here for the first time numerical solutions of the expanding 3D MHD equations by starting with different initial conditions: we follow the turbulent evolution of the plasma box imbedded in a radial wind up to 1 AU and compare the final turbulent state with observations, thus allowing us to determine which initial conditions are acceptable. We vary three kinds of initial parameters: (1) spectral/components anisotropy (2) Alfvén species imbalance (3) kinetic/magnetic imbalance. The connection of the results with available models of the formation of coronal turbulence is discussed at the end.
Evidence of coherent drift-resonant acceleration of radiation belt particles by ULF waves
- Sauvaud J.-A.
- Walt M.
- Delcourt Dominique C.
- Benoist C.
- Penou E.
- Chen Y.
- Russell Christopher T.
, 2013, 15, pp.EGU2013-1830. Evidence is presented for frequent, coherent and powerful accelerations of radiation belt electrons and protons during magnetic storms. Geomagnetic storms are indeed frequently associated with the formation of well developed, multiple bands of energetic electrons inside the inner radiation belt at L=1.1-1.9 and with prominent similar energy structures of protons inside the slot region at L=2.2-3.5. These structures typically from 100 keV up to the MeV range result from coherent interactions of energetic particles with quasi- monochromatic Ultra Low Frequency waves (ULF). These waves are induced by magnetospheric changes due to the arrival of dense solar material and related nightside injections of particles from the outer magnetosphere that destabilize field lines in the inner magnetosphere down to L=1.1. We show that, at the low altitudes of the Demeter spacecraft, these structures are best seen near the South Atlantic Anomaly because of lowering of the belt particle mirror point. As evidenced from ground measurements, energy bands are associated with quasi-sinusoidal ULF Pc5 and Pc4 waves with periods in the 1000 second range for L = 1.1-1.9 and in the 60 second range for L=2.2-3.5. Numerical simulations of the coherent drift resonance of energetic particles with Ultra Low Frequency waves show how the particles are accelerated and how the observed structures build up. The structures are formed for interaction times of the order of 20-40 minutes. For longer resonance times, particles are accelerated at energies higher than 1.5 MeV while lower energy particles are decelerated.
Europlanet/IDIS: Combining Diverse Planetary Observations and Models
- Schmidt Walter
- Capria Maria Teresa
- Chanteur Gérard
, 2013, 15, pp.6726. Planetary research involves a diversity of research fields from astrophysics and plasma physics to atmospheric physics, climatology, spectroscopy and surface imaging. Data from all these disciplines are collected from various space-borne platforms or telescopes, supported by modelling teams and laboratory work. In order to interpret one set of data often supporting data from different disciplines and other missions are needed while the scientist does not always have the detailed expertise to access and utilize these observations. The Integrated and Distributed Information System (IDIS) [1], developed in the framework of the Europlanet-RI project, implements a Virtual Observatory approach ([2] and [3]), where different data sets, stored in archives around the world and in different formats, are accessed, re-formatted and combined to meet the user's requirements without the need of familiarizing oneself with the different technical details. While observational astrophysical data from different observatories could already earlier be accessed via Virtual Observatories, this concept is now extended to diverse planetary data and related model data sets, spectral data bases etc. A dedicated XML-based Europlanet Data Model (EPN-DM) [4] was developed based on data models from the planetary science community and the Virtual Observatory approach. A dedicated editor simplifies the registration of new resources. As the EPN-DM is a super-set of existing data models existing archives as well as new spectroscopic or chemical data bases for the interpretation of atmospheric or surface observations, or even modeling facilities at research institutes in Europe or Russia can be easily integrated and accessed via a Table Access Protocol (EPN-TAP) [5] adapted from the corresponding protocol of the International Virtual Observatory Alliance [6] (IVOA-TAP). EPN-TAP allows to search catalogues, retrieve data and make them available through standard IVOA tools if the access to the archive is compatible with IVOA standards. For some major data archives with different standards adaptation tools are available to make the access transparent to the user. EuroPlaNet-IDIS has contributed to the definition of PDAP, the Planetary Data Access Protocol of the International Planetary Data Alliance (IPDA) [7] to access the major planetary data archives of NASA in the USA [8], ESA in Europe [9] and JAXA in Japan [10]. Acknowledgement: Europlanet-RI was funded by the European Commission under the 7th Framework Program, grant 228319 "Capacities Specific Programme" - Research Infrastructures Action. Reference: [1] Details to IDIS and the Europlanet-RI via Web-site: http://www.idis.europlanet-ri.eu/ [2] Demonstrator implementation for Plasma-VO AMDA: http://cdpp-amda.cesr.fr/DDHTML/index.html [3] Demonstrator implementation for the IDIS-VO: http://www.idis-dyn.europlanet-ri.eu/vodev.shtml [4] Europlanet Data Model EPN-DM: http://www.europlanet-idis.fi/documents/public_documents/EPN-DM-v2.0.pdf [5] Europlanet Table Access Protocol EPN-TAP: http://www.europlanet-idis.fi/documents/public_documents/EPN-TAPV₀.26.pdf [6] International Virtual Observatory Alliance IVOA: http://www.ivoa.net [7] International Planetary Data Alliance IPDA: http://planetarydata.org/ [8] NASA's Planetary Data System: http://pds.jpl.nasa.gov/ [9] ESA's Planetary Science Archive PSA: http://www.sciops.esa.int/index.php?project=PSA [10] JAXAs Data Archive and Transmission System DARTS: http://darts.isas.jaxa.jp
Broadband AC/DC hybrid magnetometer for space plasmas science
- Mansour Malik
- Coillot Christophe
- Dau Frédéric Nguyen Van
- Roux A.
, 2013, 15, pp.EGU2013-10155. Broadband AC/DC hybrid magnetometer for space plasmas science

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