Publications

2021

• Dynamical network models of the turbulent cascade
  
  • Gürcan Özgür D.
  Physica D: Nonlinear Phenomena, Elsevier, 2021, 426, pp.132983. (10.1016/j.physd.2021.132983)
  DOI : 10.1016/j.physd.2021.132983
• B2 Thickness Parameter Response to Equinoctial Geomagnetic Storms
  
  • Migoya-Orué Yenca
  • Alazo-Cuartas Katy
  • Kashcheyev Anton
  • Amory-Mazaudier Christine
  • Radicella Sandro
  • Nava Bruno
  • Fleury Rolland
  • Ezquer Rodolfo
  Sensors, MDPI, 2021, 21 (21), pp.7369. The thickness parameters that most empirical models use are generally defined by empirical relations related to ionogram characteristics. This is the case with the NeQuick model that uses an inflection point below the F2 layer peak to define a thickness parameter of the F2 bottomside of the electron density profile, which is named B2. This study is focused on the effects of geomagnetic storms on the thickness parameter B2. We selected three equinoctial storms, namely 17 March 2013, 2 October 2013 and 17 March 2015. To investigate the behavior of the B2 parameter before, during and after those events, we have analyzed variations of GNSS derived vertical TEC (VTEC) and maximum electron density (NmF2) obtained from manually scaled ionograms over 20 stations at middle and low latitudes of Asian, Euro-African and American longitude sectors. The results show two main kinds of responses after the onset of the geomagnetic events: a peak of B2 parameter prior to the increase in VTEC and NmF2 (in ~60% of the cases) and a fluctuation in B2 associated with a decrease in VTEC and NmF2 (~25% of the cases). The behavior observed has been related to the dominant factor acting after the CME shocks associated with positive and negative storm effects. Investigation into the time delay of the different measurements according to location showed that B2 reacts before NmF2 and VTEC after the onset of the storms in all the cases. The sensitivity shown by B2 during the studied storms might indicate that experimentally derived thickness parameter B2 could be incorporated into the empirical models such as NeQuick in order to adapt them to storm situations that represent extreme cases of ionospheric weather-like conditions. (10.3390/s21217369)
  DOI : 10.3390/s21217369
• Optimizing Mueller polarimetry in noisy systems through over-determination
  
  • Philpott Harry
  • Garcia-Caurel Enrique
  • Guaitella Olivier
  • Sobota Ana
  Applied optics, Optical Society of America, 2021, 60 (31), pp.9594. Mueller polarimetry measurements are increasingly being used to image highly dynamic and short-lived phenomena such as plasma discharges. For phenomena such as these, exposure times below 1 µs must be used. Unfortunately, these low exposure times significantly reduce the signal-to-noise ratio, making accurate and consistent measurements difficult. To overcome this limitation, we investigated increasing the number of Stokes vectors produced from a polarization state analyzer and polarization state generator, a process known as over-determination. To conduct our analysis, we used results from physical experiments using Stokes vectors generated by liquid crystal variable retarders. These results were then verified using data from simulations. First, we conclude that increasing the degree of over-determination is a simple and effective way of dealing with this noise; however, we also convey that choosing the best scheme is not an entirely trivial process. Second, we demonstrate that over-determination gives rise to hitherto inaccessible information that allows for the quantification of statistical noise and, crucially, the pinpointing of the origin of systematic error, a highly beneficial process that has been lacking until now. (10.1364/AO.435085)
  DOI : 10.1364/AO.435085
• Cluster observations of energetic electron acceleration within earthward reconnection jet and associated magnetic flux rope
  
  • Vaivads Andris
  • Khotyaintsev Yuri
  • Retino Alessandro
  • Kronberg Elena
  • Daly Patrick
  • Fu Huishan
  , 2021. (10.1002/essoar.10507069.1)
  DOI : 10.1002/essoar.10507069.1
• Non-Maxwellianity of electron distributions near Earth's magnetopause
  
  • Graham Daniel Bruce
  • Khotyaintsev Yuri
  • André Mats
  • Vaivads Andris
  • Chasapis Alexandros
  • Matthaeus William
  • Retino Alessandro
  • Valentini Francesco
  • Gershman Daniel
  , 2021. (10.1002/essoar.10506282.1)
  DOI : 10.1002/essoar.10506282.1
• Recent advances in modeling low-temperature kHz atmospheric pressure plasma jets and their interactions with surfaces
  
  • Bourdon Anne
  • Arsénio Nunes Aleixo Viegas Pedro
  • Bonaventura Zdenek
  , 2021.
• Asymptotic preserving finite-volume method for fluid models in low-temperature partially-magnetized plasma applications involving instabilities
  
  • Reboul Louis
  • Alvarez-Laguna Alejandro
  • Chabert Pascal
  • Bourdon Anne
  • Magin Thierry E.
  • Massot Marc
  , 2021.
• Investigation of Hall effect thruster instabilities with axial-azimuthal PIC simulation using a collective Thomson scattering approach
  
  • Ben Slimane Tarek
  • Honoré Cyrille
  • Charoy Thomas
  • Alvarez-Laguna Alejandro
  • Bourdon Anne
  • Chabert Pascal
  , 2021.
• Effect of jet polarity on charging of a dielectric target: simulations and experiments
  
  • Viegas Pedro
  • Slikboer Elmar
  • Bonaventura Zdenek
  • Sobota Ana
  • Guaitella Olivier
  • Bourdon Anne
  , 2021.
• Experimental Diagnostics for Electrons and Atoms in Low Pressure Iodine Plasmas
  
  • Esteves Benjamin
  • Bourdon Anne
  • Alvarez-Laguna Alejandro
  • Chabert Pascal
  • Drag Cyril
  , 2021.
• Understanding the Accuracy of Electric Field Induced Second Harmonic Generation (E-FISH) Measurements in Fast Ionization Waves
  
  • Chng Tat Loon
  • Pai David Z
  • Starikovskaia Svetlana
  • Guaitella Olivier
  • Bourdon Anne
  , 2021.
• High-order moment models for low pressure discharges
  
  • Alvarez-Laguna Alejandro
  • Esteves Benjamin
  • Reboul Louis
  • Bourdon Anne
  • Chabert Pascal
  , 2021.
• Study on the conditions to obtain a diffuse nanosecond positive ionization wave in a point-to-plane geometry in atmospheric pressure air
  
  • Bourdon Anne
  • Pechereau Francois
  • Tholin Fabien
  • Bonaventura Zdenek
  , 2021.
• Study of the instabilities in radial-azimuthal and axial-azimuthal 2D PIC simulations of a Hall Thruster
  
  • Petronio Federico
  • Charoy Thomas
  • Tavant Antoine
  • Alvarez-Laguna Alejandro
  • Bourdon Anne
  • Chabert Pascal
  , 2021.
• Non‐Maxwellianity of Electron Distributions Near Earth's Magnetopause
  
  • Graham D.
  • Khotyaintsev Yu
  • André M.
  • Vaivads A.
  • Chasapis A.
  • Matthaeus W.
  • Retinò A.
  • Valentini F.
  • Gershman D.
  Journal of Geophysical Research Space Physics, American Geophysical Union/Wiley, 2021, 126 (10). (10.1029/2021JA029260)
  DOI : 10.1029/2021JA029260
• The Solar Orbiter Radio and Plasma Waves (RPW) instrument (Corrigendum)
  
  • Maksimovic Milan
  • Bale S. D.
  • Chust Thomas
  • Khotyaintsev Yu. V.
  • Krasnoselskikh V.
  • Kretzschmar Matthieu
  • Plettemeier Dirk
  • Rucker H. O.
  • Souček J.
  • Steller M.
  • Štverák Š.
  • Trávníček P.
  • Vaivads A.
  • Chaintreuil S.
  • Dekkali M.
  • Alexandrova O.
  • Astier P.-A.
  • Barbary G.
  • Bérard D.
  • Bonnin X.
  • Boughedada K.
  • Cecconi B.
  • Chapron F.
  • Chariet M.
  • Collin Claude
  • de Conchy Yvonne
  • Dias D.
  • Guéguen L.
  • Lamy L.
  • Leray V.
  • Lion S.
  • Malac-Allain L. R.
  • Matteini L.
  • Nguyen Q. N.
  • Pantellini F.
  • Parisot J.
  • Plasson P.
  • Thijs S.
  • Vecchio A.
  • Fratter I.
  • Bellouard E.
  • Lorfèvre E.
  • Danto P.
  • Julien S.
  • Guilhem E.
  • Fiachetti C.
  • Sanisidro J.
  • Laffaye C.
  • Gonzalez F.
  • Pontet B.
  • Quéruel N.
  • Jannet G.
  • Fergeau P.
  • Brochot J.-Y.
  • Cassam-Chenai G.
  • Dudok de Wit T.
  • Timofeeva M.
  • Vincent T.
  • Agrapart C.
  • Delory G. T.
  • Turin P.
  • Jeandet A.
  • Leroy P.
  • Pellion J.-C.
  • Bouzid V.
  • Katra B.
  • Piberne R.
  • Recart W.
  • Santolík O.
  • Kolmašová I.
  • Krupař V.
  • Krupařová O.
  • Píša D.
  • Uhlíř L.
  • Lán R.
  • Baše J.
  • Ahlèn L.
  • André M.
  • Bylander L.
  • Cripps V.
  • Cully C.
  • Eriksson A.
  • Jansson S.-E.
  • Johansson E. P. G.
  • Karlsson T.
  • Puccio W.
  • Břínek J.
  • Öttacher H.
  • Panchenko M.
  • Berthomier M.
  • Goetz K.
  • Hellinger P.
  • Horbury T. S.
  • Issautier K.
  • Kontar E.
  • Krucker S.
  • Le Contel O.
  • Louarn P.
  • Martinović M.
  • Owen C. J.
  • Retino A.
  • Rodríguez-Pacheco J.
  • Sahraoui F.
  • Wimmer-Schweingruber R. F.
  • Zaslavsky A.
  • Zouganelis I.
  Astronomy & Astrophysics - A&A, EDP Sciences, 2021, 654, pp.C2. No abstract available (10.1051/0004-6361/201936214e)
  DOI : 10.1051/0004-6361/201936214e
• Middle and low latitudes hemispheric asymmetries in ∑O/N2 and TEC during intense magnetic storms of Solar Cycle 24
  
  • Younas Waqar
  • Khan Majid
  • Amory-Mazaudier C.
  • Amaechi Paul O
  • Fleury Rolland
  Advances in Space Research, Elsevier, 2021. Middle and low latitudes hemispheric asymmetries in ∑O/N2 and TEC during intense magnetic storms of Solar Cycle 24, (10.1016/j.asr.2021.10.027)
  DOI : 10.1016/j.asr.2021.10.027
• Small‐Scale Magnetic Structures: Cluster Observations
  
  • Walker Simon
  • Balikhin Michael
  • Gedalin Michael
  • Canu Patrick
  • Yearby Keith
  Journal of Geophysical Research Space Physics, American Geophysical Union/Wiley, 2021, 126 (10). (10.1029/2021JA029674)
  DOI : 10.1029/2021JA029674
• The Impact of Radial and Non‐Radial IMF on the Earth's Magnetopause Size, Shape, and Dawn‐Dusk Asymmetry From Global 3D Kinetic Simulations
  
  • Baraka Suleiman
  • Le Contel Olivier
  • Ben-Jaffel Lotfi
  • Moore William
  Journal of Geophysical Research Space Physics, American Geophysical Union/Wiley, 2021, 126 (10). (10.1029/2021JA029528)
  DOI : 10.1029/2021JA029528
• Multi-scale compressible turbulence in astrophysical plasmas viewed through theoretical, numerical and observational methods
  
  • Ferrand Renaud
  , 2021. The Solar Wind is a turbulent plasma whose internal physics has been extensively studied for years through theoretical models, plasma simulations and in situ satellite observations. Understanding the mechanisms hidden behind turbulence energy dissipation is a key step in unraveling the mysteries of the solar wind.In this thesis we first derive new Hall MHD turbulence exact laws, theoretical tools that allow for the calculation of the turbulence energy cascade rate. We develop a program able to compute these laws on 3D simulation datasets, and apply it to a variety of direct numerical simulations of different plasma models. On the one hand, these studies allow us to prove the consistency between the different exact laws existing for a same model and to better understand their detailed behavior. On the other hand, they yield important physical results: the study of Landau-fluid datasets allows us to partly reconcile the fluid and kinetic description of plasmas, justifying the analysis of solar wind energy dissipation through fluid exact laws, and the study of strongly supersonic datasets hints at turbulence playing a key role on the formation of star-forming interstellar filaments.These individual studies are then complemented by the analysis of in situ data measured by MMS in the magnetosheath. The application of the compressible exact laws to these data unveils the odd behavior of the methods used to compute 3D fields derivatives using MMS four satellites. An in-depth investigation of this method, both using MMS data and simulation data through the use of a virtual spacecraft, reveal important errors induced by this method in the calculation of exact laws. These new insights could help preparing future multipoint and multi-scale space missions targeting solar wind turbulence.
• Morphology of positive ionization waves in atmospheric pressure air: influence of electrode set-up geometry
  
  • Bourdon Anne
  • Péchereau François
  • Tholin Fabien
  • Bonaventura Zdenek
  Plasma Sources Science and Technology, IOP Publishing, 2021, 30 (10), pp.105022. A numerical parametric study on positive diffuse discharges in pointto-plane geometry in air at atmospheric pressure is presented. Different discharge characteristics are studied: ignition time, connection time to the grounded cathode plane, shape of the discharge and its maximum radius at the connection time, evolution of the maximum electric field in the discharge front and velocity of the ionization front during its propagation. First, a case at a DC voltage of 50 kV applied on a rod anode ended by a semi-sphere with a radius of 100 µm set at 1.6 cm from a grounded cathode plane is considered. The influence of the rod radius, the position of a disc holder, the shape of the anode electrode and the radial extension of the computational domain are studied. The radius of curvature of the anode tip (varied between 100 and 1000 µm) and the shape of the anode electrode (rod or hyperbola) are shown to have a negligible influence on discharge characteristics. Conversely, the presence of a disc holder or a small radial computational domain lead to a decrease of the maximum discharge radius at the connection time and a change in the discharge shape from a conical to an ellipsoidal shape. These changes on the discharge morphology have only a limited impact on the propagation velocity of the discharge front and maximum electric field on the discharge axis. Then, a point-to-plane geometry with a rod electrode of 50 µm radius, in a 1.6 cm gap, with a 100 kV voltage applied with a rise time of 1 ns is studied. The influence of a disc holder on the discharge characteristics is the same as for lower DC voltages. Finally, the time evolution of the absolute value of the electric field at different test points on the discharge axis is studied. Close to the anode tip, rapidly after the peak of electric field due to the passage of the ionization front, the electric field in the discharge channel is shown to increase to values higher than the breakdown field. (10.1088/1361-6595/ac2be5)
  DOI : 10.1088/1361-6595/ac2be5
• Reply to Comment on “An Active Plume Eruption on Europa During Galileo Flyby E26 as Indicated by Energetic Proton Depletions”
  
  • Huybrighs H.
  • Roussos E.
  • Blöcker A.
  • Krupp N.
  • Futaana Y.
  • Barabash S.
  • Hadid L. Z.
  • Holmberg M.
  • Witasse O.
  Geophysical Research Letters, American Geophysical Union, 2021, 48 (18). (10.1029/2021GL095240)
  DOI : 10.1029/2021GL095240
• Key role of phase dynamics & diamagnetic drive on Reynolds stress in fusion plasma turbulence
  
  • Sarazin Y.
  • Dif-Pradalier Guilhem
  • Ghendrih Ph.
  • Garbet X.
  • Berger A.
  • Bigué R.
  • Bourne Emilie
  • Grandgirard Virginie
  • Obrejan Kevin
  • Varennes R.
  • Vermare L.
  , 2021.
• Cold plasma treatment of seeds: deciphering the role of contact surfaces through multiple exposures, randomizing and stirring
  
  • Dufour Thierry
  • Gutierrez Q
  Journal of Physics D: Applied Physics, IOP Publishing, 2021, 54 (50), pp.505202. (10.1088/1361-6463/ac25af)
  DOI : 10.1088/1361-6463/ac25af
• A Lithosphere–Atmosphere–Ionosphere Coupling Phenomenon Observed Before M 7.7 Jamaica Earthquake
  
  • Adil Muhammad Arqim
  • Şentürk Erman
  • Pulinets Sergey Alexander
  • Amory-Mazaudier Christine
  • Adil Muhammad Arqim
  • Pulinets Sergey Alexander
  Pure and Applied Geophysics, Springer Verlag, 2021. The satellite-based earth observations have become an appropriate instrumental approach in monitoring the natural hazards among modern-day researchers. This study presents a multi-parameter approach using precursors of different physical nature defining the states of atmosphere and the ionosphere in terms of temporal and spatial variations about 5 days before the impending M 7.7 Jamaican earthquake (EQ). We performed a comprehensive analysis from the surface to the ionosphere at different altitude levels by analyzing the different datasets comprising, surface air temperature, relative humidity, total column water vapor, air pressure, Outgoing Longwave Radiations (OLR), and the total electron content of the global ionosphere maps (GIM-TEC). We observed a sharp increment in the atmospheric chemical potential (ACP) due to the increased radon activity that led to an abrupt decrement in the atmospheric relative humidity and, consequently, increased OLR that provides strong evidence of the air ionization production around the epicenter of M 7.7 EQ. Moreover, to check the periodicity of these atmospheric parameters, we performed a confutation analysis by meticulously analyzing these parameters in the same month and region for the previous 5 years during the non-existence of any major seismicity. This technique confirmed that the simultaneous atmospheric variations observed before the Jamaica EQ are not cyclic in the absence of significant seismic activities. The ionospheric conditions have also shown consistency with atmospheric disturbances, as depletions in GIM-TECs, having an amplitude of 4 TECU, are observed over the epicenter for 6 h (LT = 13-19 (-UT)) on January 23, 2020. Additionally, the vertical ionospheric and atmospheric profiles from FORMOSAT-7/COSMIC-2 (F7/C2), at different altitudes (75-225 km) over the EQ epicenter, showed significant depletions on January 23, 2020. These TEC variations are observed to be an effect of the vertical seismogenic electric field due to the production of the air ionization at the atmospheric boundary layer by increased radon activity around the seismic preparation zone. The existence of these co-located synchronized atmospheric and ionospheric anomalies is explicitly and persistently local over a small region of the epicenter of Jamaican EQ that could be considered as potential short-term precursors. Also, these multiobserved anomalies will contribute to the physical explanation of the Lithosphere-Atmosphere-Ionosphere Coupling (LAIC) model. (10.1007/s00024-021-02867-z)
  DOI : 10.1007/s00024-021-02867-z