Stéphane Béchu

Documents

Publications

	Isotope effect in plasmas driven by ECR modules towards H^– and D^– production M Mitrou , P Svarnas , S Béchu , S Aleiferis Plasma Sources Science and Technology, 2023, 32 (10), pp.105001. ⟨10.1088/1361-6595/acfbf5⟩ Journal articles hal-04260490v1
	Latest experimental and theoretical advances in the production of negative ions in caesium-free plasmas F. Taccogna , S. Béchu , A. Aanesland , P. Agostinetti , R. Agnello The European Physical Journal D : Atomic, molecular, optical and plasma physics, 2021, 75 (8), pp.227. ⟨10.1140/epjd/s10053-021-00228-y⟩ Journal articles hal-03325804v1
	Direct measurements of electronic ground state ro-vibrationally excited D$_2$ molecules produced on ECR plasma-facing materials by means of VUV-FT absorption spectroscopy S. Béchu , J.L. Lemaire , L. Gavilan , S. Aleiferis , V. Shakhatov Journal of Quantitative Spectroscopy and Radiative Transfer, 2020, 257, pp.107325. ⟨10.1016/j.jqsrt.2020.107325⟩ Journal articles hal-03043281v1
	Negative ion characterization in a helicon plasma source for fusion neutral beams by cavity ring-down spectroscopy and Langmuir probe laser photodetachment R Agnello , Stéphane Béchu , I Furno , P H Guittienne , A A Howling Nuclear Fusion, 2020, 60, pp.026007. ⟨10.1088/1741-4326/ab5e64⟩ Journal articles hal-03049113v1
	Magnetic field configurational study on A Helicon-Based Plasma Source for Future Neutral Beam Systems Kamal M Ahmed , Riccardo Agnello , Stéphane Béchu , Gilles Cartry , H P L de Esch Plasma Sources Science and Technology, 2019, 28 (9), pp.095005. ⟨10.1088/1361-6595/ab3705⟩ Journal articles hal-02375711v1
	Cavity ring-down spectroscopy to measure negative ion density in a helicon plasma source for fusion neutral beams R. Agnello , M. Barbisan , I. Furno , Ph. Guittienne , A.A. Howling Review of Scientific Instruments, 2018, 89 (10), pp.103504. ⟨10.1063/1.5044504⟩ Journal articles hal-01952212v1
	Effects of the plasma-facing materials on the negative ion H⁻ density in an ECR (2.45 GHz) plasma J. Bentounes , Stéphane Béchu , F. Biggins , A. Michau , Lisseth Gavilan Plasma Sources Science and Technology, 2018, 27 (5), pp.055015. ⟨10.1088/1361-6595/aac0ed⟩ Journal articles insu-01806396v1
	Production of hydrogen negative ions in an ECR volume source: balance between vibrational excitation and ionization S. Aleiferis , P. Svarnas , S. Béchu , O. Tarvainen , M. Bacal Plasma Sources Science and Technology, 2018, 27 (7), pp.075015. ⟨10.1088/1361-6595/aabf1b⟩ Journal articles hal-01856810v1
	Detection of rovibrationally excited molecular hydrogen in the electronic ground state via synchrotron radiation Stéphane Béchu , S. Aleiferis , J. Bentounes , Lisseth Gavilan , V. A. Shakhatov Applied Physics Letters, 2017, 111, pp.074103. ⟨10.1063/1.4985617⟩ Journal articles insu-01616219v1
	Characterization of X-ray gas attenuator plasmas by optical emission and tunable laser absorption spectroscopies Álvaro Martín Ortega , Ana Lacoste , Stéphane Béchu , Alexandre Bès , Nader Sadeghi Journal of Synchrotron Radiation, 2017, 24 (6), pp.1195-1208. ⟨10.1107/S1600577517012000⟩ Journal articles hal-01645834v1
	Spectroscopic characterization of H2 and D2 helicon plasmas generated by a resonant antenna for neutral beam applications in fusion C. Marini , R. Agnello , B.P. Duval , I. Furno , A.A. Howling Nuclear Fusion, 2017, 57, pp.036024. ⟨10.1088/1741-4326/aa53eb⟩ Journal articles in2p3-01452728v1
	Kinetics of electron states of hydrogen molecules in nonequilibrium discharges: Singlet states V.A. Shakhatov , Yu. A. Lebedev , A. Lacoste , Stéphane Béchu High Temperature / Teplofizika Vysokikh Temperatur, 2016, 54 (1), pp.124-143. ⟨10.1134/S0018151X16010090⟩ Journal articles in2p3-01294682v1
	Experimental investigation of the relation between H− negative ion density and Lyman-α emission intensity in a microwave discharge S. Aleiferis , O. Tarvainen , P. Svarnas , M. Bacal , Stéphane Béchu Journal of Physics D: Applied Physics, 2016, 49 (9), pp.095203. ⟨10.1088/0022-3727/49/9/095203⟩ Journal articles in2p3-01272018v1
	Negative ion source development for a photoneutralization based neutral beam system for future fusion reactors A. Simonin , R. Agnello , Stéphane Béchu , J. Bernard , C. Blondel New Journal of Physics, 2016, 18 (12), pp.125005. ⟨10.1088/1367-2630/18/12/125005⟩ Journal articles hal-02380026v1
	Emission spectroscopy of a dipolar plasma source in hydrogen under low pressures A. Shakhatov , A. Lebedev , A. Lacoste , Stéphane Béchu High Temperature / Teplofizika Vysokikh Temperatur, 2016, 54 (4), pp.467 - 474. ⟨10.1134/S0018151X16040209⟩ Journal articles in2p3-01376128v1
	Excitation kinetics of electronic states of hydrogen molecules in nonequilibrium discharges: Electronic ground state V. A. Shakhatov , Yu. A. Lebedev , A. Lacoste , Stéphane Béchu High Temperature / Teplofizika Vysokikh Temperatur, 2015, 53 (4), pp.569-587. ⟨10.1134/S0018151X15040215⟩ Journal articles in2p3-01250612v1
	R&D around a photoneutralizer-based NBI system (Siphore) in view of a DEMO Tokamak steady state fusion reactor A. Simonin , Jocelyn Achard , K. Achkasov , Stéphane Béchu , C. Baudouin Nuclear Fusion, 2015, 55 (12), pp.123020. ⟨10.1088/0029-5515/55/12/123020⟩ Journal articles hal-02381781v1
	Investigation of Mg2(Si,Sn) thin films for integrated thermoelectric devices C. Prahoveanu , A. Lacoste , Stéphane Béchu , C. de Vaulx , K. Azzouz Journal of Alloys and Compounds, 2015, 649, pp.573-578. ⟨10.1016/j.jallcom.2015.07.043⟩ Journal articles in2p3-01214469v1
	MgH2 thin films deposited by one-step reactive plasma sputtering H. Le-Quoc , A. Lacoste , S. Miraglia , Stéphane Béchu , A. Bès International Journal of Hydrogen Energy, 2014, 39 (31), pp.17718-17725. ⟨10.1016/j.ijhydene.2014.08.096⟩ Journal articles in2p3-01068590v1
	H⁻ Negative Ion Production From a 2D Network of ECR Dipolar Plasma Sources S. Aleiferis , P. Svarnas , I. Tsiroudis , Stéphane Béchu , M. Bacal IEEE Transactions on Plasma Science, 2014, 42 (10), pp.2828-2829. ⟨10.1109/TPS.2014.2330421⟩ Journal articles in2p3-01094310v1
	An open-ended coaxial plasma source with extended operating parameters: plasma impedance, coupling and energy efficiency P. Baële , Stéphane Béchu , A. Bès , J. Pelletier , A. Lacoste Plasma Sources Science and Technology, 2014, 23 (6), pp.064006. ⟨10.1088/0963-0252/23/6/064006⟩ Journal articles in2p3-01091992v1
	Multi-dipolar microwave plasmas and their application to negative ion production Stéphane Béchu , A. Soum-Glaude , A. Bès , A. Lacoste , P. Svarnas Physics of Plasmas, 2013, 20, pp.101601. ⟨10.1063/1.4823466⟩ Journal articles in2p3-00870733v1
	Thermoelectric properties of thin ﬁlms of Sb doped Mg2Si1 xSnx solid solutions H. Le-Quoc , Stéphane Béchu , S. Populoh , A. Weidenkaff , A. Lacoste Journal of Alloys and Compounds, 2013, 546, pp.138-144. ⟨10.1016/j.jallcom.2012.08.053⟩ Journal articles in2p3-00749377v1
	Deposition of thin films of Mg2Si1-xSnx solid solution by plasma-assisted co-sputtering. Huy Le Quoc , A. Lacoste , Stéphane Béchu , A. Bès , Daniel Bourgault Journal of Alloys and Compounds, 2012, 538, pp.73-78. ⟨10.1016/j.jallcom.2012.06.003⟩ Journal articles hal-00961258v1
	Study of hydrogen plasma in the negative-ion extraction region P. Svarnas , B.M. Annaratone , Stéphane Béchu , J. Pelletier , M. Bacal Plasma Sources Science and Technology, 2009, 18, pp.045010. ⟨10.1088/0963-0252/18/4/045010⟩ Journal articles in2p3-00410312v1
	Extraction of large-area low-energy electron beams from a multi-dipolar plasma A. Lacoste , Stéphane Béchu , O. Maulat , J. Pelletier , Y. Arnal Plasma Sources Science and Technology, 2009, 18, pp.015017. ⟨10.1088/0963-0252/18/1/015017⟩ Journal articles in2p3-00354123v1
	Bulk and thin films of magnetic shape memory Ni-Mn-Ga alloys deposited by multi-dipolar plasma-assisted sputtering Gabriel Girard , Stéphane Béchu , N. Caillault , L. Carbone , Luc Ortega Journal of Alloys and Compounds, 2008, 465, pp.35-40. ⟨10.1016/j.jallcom.2007.11.087⟩ Journal articles in2p3-00339190v1
	H- extraction from electron-cyclotron-resonance-driven multicusp volume source operated in pulsed mode P. Svarnas , M. Bacal , Philippe Auvray , Stéphane Béchu , J. Pelletier Review of Scientific Instruments, 2006, 77, pp.03A512. ⟨10.1063/1.2165270⟩ Journal articles in2p3-00372721v1
	Comparison between Langmuir probe and microwave autointerferometry measurements at intermediate pressure in an argon surface wave discharge Antoine Rousseau , E. Teboul , Stéphane Béchu Journal of Applied Physics, 2005, 98, pp.083306. ⟨10.1063/1.2112172⟩ Journal articles in2p3-00372705v1
	Nitrogen profiles in materials implanted via plasma-based ion implantation A. Lacoste , Stéphane Béchu , Y. Arnal , J. Pelletier , Corentin Vallée Surface and Coatings Technology, 2002, 156 (1-3), pp.125-130. ⟨10.1016/S0257-8972(02)00076-2⟩ Journal articles hal-00669437v1

	Laser–induced photo-detachment diagnostic for interrogating pulsed ECR–driven plasmas: Application to H$^−$ and D$^−$ negative ions M Mitrou , S Béchu , P Svarnas International Conference on Phenomena in Ionized Gases (XXXV ICPIG), Jul 2023, Egmond aan Zee, Netherlands Conference papers hal-04285360v1
	Investigation of the ro-vibrational levels of H$_2$/D$_2$ molecules by VUV-absorption spectroscopy for the production of H$^-$/D$^-$negative ions for fusion application S Béchu , J L Lemaire , M Mitrou , N de Oliveira , P Svarnas 31st Summer School and International Symposium on the Physics of Ionized Gases, Sep 2022, Belgrade (Serbia), France. pp.157 Conference papers hal-04285395v1
	Investigation of the ro-vibrational levels of D2 molecules by VUV-absorption spectroscopy for the production of D- negative ions for fusion application Stéphane Béchu , Jean-Louis Lemaire , Maria Mitrou , Nelson de Oliveira , Laurent Bonny 31st Summer School and International Symposium on the Physics of Ionized Gases, Sep 2022, Belgrade, Serbia Conference papers hal-03852868v1
	H$^-$ and D$^-$ production efficiency in a multi-dipole ECR-plasma source as a function of gas pressure M. Mitrou , P. Svarnas , S. Béchu 19th International Conference on Ion Sources (ICIS2021), Sep 2021, virtual, Canada. pp.012007, ⟨10.1088/1742-6596/2244/1/012007⟩ Conference papers hal-03434717v2
	Experimental study on dynamic effects of H − and D − negative ions in an ECR-plasma source M. Mitrou , P. Svarnas , S. Béchu International Conference on Ion Sources (ICIS 2021), Nov 2021, virtual, Switzerland. ⟨10.1088/1742-6596/2244/1/012006⟩ Conference papers hal-03434707v2
	Experimental study on dynamic effects of H$^-$ and D$^-$ negative ions in an ECR-plasma source M. Mitrou , P. Svarnas , S. Béchu 19th International Conference on Ion Sources, Sep 2021, Online, Canada. pp.012006, ⟨10.1088/1742-6596/2244/1/012006⟩ Conference papers hal-03654984v1
	3D Rarefied Molecular Flow Simulation To Understand Measurements Performed In Deuterium Plasmas S. Béchu , M Mitrou , P Svarnas , J L Lemaire , A Bès COMSOL Conference EUROPE, Oct 2020, Grenoble, France Conference papers hal-03063791v1
	Physics of helicon waves and negative ions in the Resonant Antenna Ion Device (RAID) Ivo Furno , Riccardo Agnello , Philippe Guittienne , A.A. Howling , Rémy Jacquier 29th International Toki Conference on Plasma and Fusion Research (ITC 29), Oct 2020, Toki, Japan Conference papers hal-03434682v2
	Characterization of a distributed antenna array microwave plasma used for low-temperature/large-area nanocrystalline diamond film deposition Damia Dekkar , Fabien Benedic , Xavier Aubert , Stéphane Béchu , Alexandre Bès Plathinium, Sep 2019, Antibes, France Conference papers hal-03049712v1
	Cs-free negative ion source: from rovibrationnal states of H 2 /D 2 molecules to the extraction of negative ions Stéphane Béchu , A. Simonin , I. Furno , R. Agnello , J.L. Lemaire Cold Plasmas, Fundamentals and Applications, Sep 2019, ERICE, Italy Conference papers hal-03049704v1
	Laser-aided plasma diagnostics of a helicon plasma source for fusion neutral beams Ivo Furno , R. Agnello , Y Andrebe , H Arnichaud , P. Blanchard 19th International Symposium on Laser-Aided Plasma Diagnostics 2019 (LAPD19), Sep 2019, Whitefish, United States Conference papers hal-03049709v1
	First B-dot measurements in the RAID device, an alternative negative ion source for DEMO neutral beams Rémy Jacquier , Riccardo Agnello , Basile Pouradier Duteil , Philippe Guittienne , Alan Howling 30th Symposium on Fusion Technology (SOFT-30), Sep 2018, Messina, Italy. pp.1140-1144, ⟨10.1016/j.fusengdes.2019.02.025⟩ Conference papers hal-02277789v1
	Elementary microwave plasma sources with extended operating parameters (from low to high- pressures) for large area deposition A. Lacoste , P. Baele , A. Martin Ortega , A. Bes , Stéphane Béchu International Conference “The Physics of Low Temperature Plasma” (PLTP-2017), Jun 2017, Kazan, Russia Conference papers in2p3-01541651v1
	Plasma processes controlled by the adjustment of particle and energy fluxes A. Lebedev , S Shakhatov , A. Lacoste , Stéphane Béchu International Conference “The Physics of Low Temperature Plasma” (PLTP-2017), Jun 2017, Kazan, Russia. pp.012052, ⟨10.1088/1742-6596/927/1/012052⟩ Conference papers in2p3-01711805v1
	Effects of plasma-facing materials on the negative ion (H-/D-) current extracted from an ECR plasma source Stéphane Béchu , F. Biggins , J. Angot , S. Aleiferis , P. Svarnas XXXIII International Conference on Phenomena in Ionized Gases (ICPIG 2017), Jul 2017, Estoril, Portugal. pp.63 Conference papers in2p3-01572034v1
	A novel helicon plasma source for negative ion beams for fusion I. Furno , R. Agnello , B.P. Duval , C. Marini , A.A. Howling 5th International Symposium on Negative Ions, Beams and Sources (NIBS’16), Sep 2016, Oxford, United Kingdom Conference papers in2p3-01367553v1
	Experimental study of H atom recombination on different surfaces in relation to H⁻ negative ion production S. Aleiferis , J. Bentounes , Stéphane Béchu , P. Svarnas , Alexandre Bés 5th International Symposium on Negative Ions, Beams and Sources (NIBS’16), Sep 2016, Oxford, United Kingdom. pp.020011, ⟨10.1063/1.4995717⟩ Conference papers insu-01616032v1
	Coupling modes in a dipolar microwave plasma source (2.45GHz) P. Baele , R. Maurau , Stéphane Béchu , A. Bès , A. Lacoste 9th International Conference on Reactive Plasmas, 68th Gaseous Electronics Conference, 33rd Symposium on Plasma Processing (ICRP-9, GEC-68, SPP-33), Oct 2015, Honolulu, United States Conference papers in2p3-01217122v1
	Emission spectroscopy of dipolar plasma source in low pressure hydrogen Stéphane Béchu , A. Lacoste , Yu. A. Lebedev , V.A. Shakhatov 9th International Workshop on Microwave Discharges: Fundamentals and Applications, (MD 9), Sep 2015, Cordoba, Spain Conference papers in2p3-01231366v1
	Plasma properties of the cybele negative ion source for fusion applications: PIC simulations and experiments Jean-Pierre Boeuf , G. Fubiani , Stéphane Béchu , P. Garibaldi , C. Grand 42nd IEEE International Conference on Plasma Science (ICOPS), May 2015, Belek, Turkey. ⟨10.1109/PLASMA.2015.7179519⟩ Conference papers in2p3-01391481v1
	Plamas micro-onde basse pression et procédé associés Stéphane Béchu , A. Bès , A. Lacoste 12èmes Journées d’Echange du Réseau Plasmas Froids, Oct 2014, La Rochelle, France Conference papers in2p3-01128593v1
	Low-pressure plasma sources with localized power absorption operating from 0.35 to 2.45 GHz A. Lacoste , P. Baële , R. Maurau , A. Bès , Stéphane Béchu 26th Symposium on Plasma Physics and Technology (SPPT), Jun 2014, Prague, Czech Republic Conference papers in2p3-01009511v1
	Investigation of Mg2(Si,Sn) thin films for integrated thermoelectric devices C. Prahoveanu , A. Lacoste , C. de Vaulx , K. Azzouz , Stéphane Béchu International Conference on Thermoelectrics (ICT2014), Jul 2014, Nashville, United States Conference papers in2p3-01026194v1
	Study of the vibrational distribution function of the hydrogen molecule in the ground state X1Sigma+g in gas discharges Yu.A. Lebedev , V.A. Shakhatov , A. Lacoste , Stéphane Béchu VII International Symposium on Theorical and Applied Plasma Chemistry (ISTAPC-2014), Sep 2014, Plios, Russia. pp.47-50 Conference papers in2p3-01185363v1
	Mesures des paramètres électrostatiques d’un plasma par sonde de Langmuir Stéphane Béchu , A. Bès , L. Bonny , A. Lacoste Atelier Diagnostics Plasma: Méthode de Détermination des Propriétés Electroniques et Ioniques, Dec 2014, Orléans, France Conference papers in2p3-01123830v1
	Ion source development for a photoneutralization based NBI system of fusion reactors A. Simonin , H.P.L. de Esch , P. Garibaldi , C. Grand , Stéphane Béchu 4th International Symposium on Negative Ions, Beams and Sources (NIBS2014), Oct 2014, Garching, Germany. pp.050002, ⟨10.1063/1.4916459⟩ Conference papers in2p3-01122665v1
	Electrostatic probe and laser photodetachment measurements in the hydrogen negative ion (H-) source "Prometheus I" S. Aleiferis , P. Svarnas , I. Tsiroudis , Stéphane Béchu , A. Lacoste 20th International Conference on Gas Discharges and their Applications (gd 2014), Jul 2014, Orléans, France. pp.sciencesconf.org:gd2014:27348 Conference papers in2p3-01244357v1
	Experimental and numerical simulation of the vibrational distribution function of the hydrogen molecule in the ground state X1Σ+g in gas discharges Yu.A. Lebedev , V.A. Shakhatov , A. Lacoste , Stéphane Béchu X International conference "Mesh Methods for Boundary-Value Problems and Applications", Sep 2014, Kazan, Russia Conference papers in2p3-01185857v1
	Plasma processes controlled by the adjustment of particle and energy fluxes A. Lacoste , A. Todoran , C. Prahoveanu , A. Bès , Stéphane Béchu International Conference "The physics of Low Temperature Plasma" (PLPT-2014), May 2014, Kazan, Russia Conference papers in2p3-01016958v1
	Laser photo-detachment measurements in the ECR driven H-negative ion source PROMETHEUS I S. Aleiferis , P. Svarnas , Stéphane Béchu , M. Bacal , A. Lacoste International Conference on Plasma Science ICOPS 2012, Jul 2012, Edinburgh, Scotland, Unknown Region. pp.3P-50, ⟨10.1109/PLASMA.2012.6383834⟩ Conference papers hal-02894186v1
	Advances and issues of microwave plasmas A. Lacoste , G. Regnard , Stéphane Béchu , A. Bès Colloque interactions micro-ondes/plasmas et applications aérospatiales, Fondation de Coopération Scientifique Sciences et Technologies pour l'Aéronautique et l'Espace (STAE), Oct 2011, Toulouse, France Conference papers in2p3-01016893v1
	Dispositif de mesure des paramètres plasma par sonde de Langmuir : QUË ÐO A. Bès , Stéphane Béchu , A. Lacoste , D. Tourres , G. Marcotte Journées du Réseau des Plasmas Froids, May 2011, Toulouse, France Conference papers in2p3-00612027v1
	Technologies micro-ondes : solutions adaptées à des problématiques spécifiques A. Lacoste , Stéphane Béchu , A. Bès Journée Plasmas et Energie, Sep 2011, Grenoble, France Conference papers in2p3-01017303v1
	Mesures expérimentale de la fonction de distribution en énergie des électrons (FDEE) Stéphane Béchu , A. Bès , L. Bonny , A. Lacoste Atelier CNRS Plasmas Froids 2011 " Fonction de distribution en énergie des ions et des électrons dans un plasma ", Nov 2011, Orléans, France Conference papers in2p3-01016895v1
	Surface vicinity production of negative ions Stéphane Béchu , A. Soum-Glaude , A. Bès , J. Pelletier , A. Lacoste Co-ordinating Committee on Neutral Beams (CCNB), Feb 2010, Saint Paul-lès-Durance, France Conference papers in2p3-01017234v1
	Production of H- ions by surface mechanisms in Cs-free multi-dipolar microwave plasma Stéphane Béchu , Didier Lemoine , M. Bacal , A. Bès , J. Pelletier 1st International Conference on Negative Ions, Beams and Sources NIBS 2008, Sep 2008, Aix en Provence, France. pp.74-83, ⟨10.1063/1.3112551⟩ Conference papers in2p3-00336454v1
	Vibrationnally excited H2 formation on graphite surface Stéphane Béchu ARCHES Workshop - Elementary mechanisms of hydrogen / carbon-surface interactions, Oct 2008, Marseille, France Conference papers in2p3-00338209v1
	Study of the plasma near the plasma electrode by probes and photodetachment in ECR-driven negative ion source M. Bacal , P. Svarnas , Stéphane Béchu , J. Pelletier 1st International Conference on Negative Ions, Beams and Sources (NIBS 2008), Sep 2008, Aix en Provence, France. pp.47-54, ⟨10.1063/1.3112547⟩ Conference papers in2p3-00336457v1
	Plasma-based ion implantation : a valuable technology for the elaboration of innovative materials and nano-structured thin films D. Vempaire , J. Pelletier , A. Lacoste , Stéphane Béchu , J. Sirou 12th International Congress on Plasma Physics, Oct 2004, Nice, France Conference papers hal-00002030v1

	Cylindrical SDBD of well-defined expansion area for standardised studies Konstantinos Giotis , Panagiotis Svarnas , Maria Mitrou , Kristaq Gazeli , Guillaume Lombardi International Conference on Phenomena in Ionized Gases (XXXV ICPIG), Jul 2023, Egmond aan Zee, Netherlands Conference poster hal-04285292v1
	Laser-induced photodetachment diagnostic for interrogating pulsed ECR-driven plasmas: Application to H- and D- negative ions M Mitrou , S Béchu , P Svarnas xxxv ICPIG, Jul 2023, Egmond aan Zee, Netherlands. 2023 Conference poster hal-04285204v1
	Distributed microwave plasma sources: coupling modes and operation at high pressure for large area deposition A. Martin Ortega , A. Bès , Stéphane Béchu , A. Lacoste XXXIII International Conference on Phenomena in Ionized Gases (ICPIG 2017), Jul 2017, Estoril, Portugal. , Proceedings of the XXXIII International Conference on Phenomena in Ionized Gases pp.314, 2017 Conference poster in2p3-01572036v1
	Modelling and characterisation of elementary microwave plasma sources at medium pressure (1 to 50 Torr) for high rate deposition A. Martin Ortega , A. Bes , Stéphane Béchu , A. Lacoste International Conference “The Physics of Low Temperature Plasma” (PLTP-2017), Jun 2017, Kazan, Russia. Conference poster in2p3-01541647v1
	Spectroscopic measurements of hydrogen dissociation degree and H- production in resonant antenna-generated plasmas C. Marini , P. Demolon , B. P. Duval , I. Furno , A. A. Howling 43rd Conference on Plasma Physics, Jul 2016, Leuven, Belgium. Conference poster in2p3-01357794v1
	Study of the production of vibrationally excited molecules of hydrogen H2(X1Σg,v’’) on surfaces by indirect and direct diagnostics Stéphane Béchu , J. Bentounes , S. Aleiferis , P. Svarnas , V.A. Shakhatov 1st EUCASS Aerospace Thematic Workshop: Collisions of Fast Particles with Surfaces, Sep 2016, Aussois, France. Conference poster in2p3-01372233v1
	VUV emission spectroscopy combined with H- density measurements in the ion source Prometheus I S. Aleiferis , J. Laulainen , P. Svarnas , O. Tarvainen , M. Bacal 5th International Symposium on Negative Ions, Beams and Sources (NIBS’16), Sep 2016, Oxford, United Kingdom. , AIP Conference Proceedings, 1869, pp.030045 2017, ⟨10.1063/1.4995765⟩ Conference poster in2p3-01367559v1
	Study of the rovibrational levels of ground state excited hydrogen molecules by laser photodetachment and emission spectroscopy Stéphane Béchu , S. Aleiferis , P. Svarnas , V. A. Shakhatov , Yu.A. Lebedev 22nd International Symposium on Plasma Chemistry (ISPC 22), Jul 2015, Antwerp, Belgium. 22nd International Symposium on Plasma Chemistry July 5-10, 2015; Antwerp, Belgium ISPC2015-proceedings, P-I-1-2, 3 p., 2015 Conference poster in2p3-01174010v1
	Effect of Sb‐doping on the thermoelectric properties of Mg2Si thin films synthesized by microwave plasma‐assisted co‐sputtering C. Prahoveanu , L. Laversenne , M. Salaun , C. De Vaulx , K. Azzouz 34th Annual International Conference on Thermoelectrics & 13th European Conference on Thermoelectrics (ICT & ECT 2015), Jun 2015, Dresden, Germany Conference poster in2p3-01176819v1
	Couches minces thermoélectriques Mg2(Si,Sn) déposées par co-pulvérisation assistée par plasma micro-onde C. Prahoveanu , A. Lacoste , C. de Vaulx , K. Azzouz , Stéphane Béchu Ecole Thermoélectricité 2014, 2014, Annecy, France Conference poster in2p3-01009972v1
	Microwave plasma with localized power absorption: from elementary sources to device andapplications A. Bès , Long Tan Phan , Stéphane Béchu , J. Pelletier , A. Lacoste 8th International Conference on Reactive Plasmas - 31st Symposium on Plasma Processing (ICRP-8/SPP-31), Feb 2014, Fukuoka, Japan Conference poster in2p3-00943157v1
	Stabilité thermique et propriétés thermoélectriques des couches minces Mg2(Si,Sn) déposées par co-pulvérisation assistée par plasma micro-onde C. Prahoveanu , A. Lacoste , C. De Vaulx , K. Azzouz , Stéphane Béchu 12èmes Journées d’Echange du Réseau Plasmas Froids, Oct 2014, La Rochelle, France Conference poster in2p3-01128596v1
	L’analyseur de réseau vectoriel: un outil aux multiples possibilités pour la conception de sources et le diagnostic plasma P. Baële , R. Maurau , Stéphane Béchu , A. Bès , J. Pelletier 12èmes Journées d’Echange du Réseau Plasmas Froids, Oct 2014, La Rochelle, France Conference poster in2p3-01128599v1
	Design and performance head-to-head microwave plasma sources P. Baële , Stéphane Béchu , A. Bès , J. Pelletier , A. Lacoste Yu A. Lebedev. VIIIth International Workshop on Microwave Discharges: Fundamentals and Applications, Sep 2012, Zvenigorod, Russia. pp.147-150, 2012 Conference poster in2p3-00733289v1
	The ECR-driven H negative-ion source PROMETHEUSI: Deisgn and preliminary characterization P. Svarnas , S. Aleiferis , Stéphane Béchu , M. Bacal , A. Lacoste XIX International Conference on Gas Discharges and Their Applications (GD 2012), Sep 2012, Beijing, China Conference poster in2p3-01017325v1
	Top-to-tail microwave plasma sources with extended operating conditions A. Lacoste , Stéphane Béchu , G. Regnard , A. Bès , J. Pelletier XXI Europhysics Conference on Atomic and Molecular Physics of Ionized Gases (ESCAMPIG), Jul 2012, Viana do Castelo, Portugal. European Physical Society, pp.P 2.8.6, 2012 Conference poster in2p3-00721931v1
	Surface mechanisms investigation for negative ion production Stéphane Béchu , A. Soum-Glaude , A. Bès , P. Svarnas , M. Bacal XXI Europhysics Conference on Atomic and Molecular Physics of Ionized Gases (ESCAMPIG), Jul 2012, Viana do Castelo, Portugal. European Physical Society, pp.P 2.1.1, 2012 Conference poster in2p3-00721930v1
	H atom density measurement using a combination of optical emission spectroscopy and Langmuir probes diagnostics A. Soum-Glaude , Stéphane Béchu , A. Bès , K. Hassouni , A. Lacoste XXI Europhysics Conference on Atomic and Molecular Physics of Ionized Gases (ESCAMPIG), Jul 2012, Viana do Castelo, Portugal. European Physical Society, pp.P 2.5.8, 2012 Conference poster in2p3-00721932v1
	Deposition of thin films of Mg2 Si1-x Snx solid solution by plasma assisted co-sputtering H. Le-Quoc , A. Lacoste , A. Bès , Stéphane Béchu , J. Pelletier 8th European Conference on Thermoelectrics (ECT 2010), Sep 2010, Como, Italy. 4 p., 2010 Conference poster in2p3-00530474v1
	Distribution spatiale du plasma au voisinage de l'électrode-plasma d'une source d'ions négatifs M. Bacal , P. Svarnas , J. Breton , Stéphane Béchu , Didier Lemoine Xe Congrès de la Division Plasmas de la Société Française de Physique, May 2008, Paris, France Conference poster in2p3-00281919v1
	Distribution of H- ions in the vicinity of the extraction aperture M. Bacal , P. Svarnas , J. Breton , Stéphane Béchu , Didier Lemoine 19th Europhysics Conference on the Atomic and Molecular Physics of Ionized Gases (ESCAMPIG), 2008, Granada, Spain Conference poster in2p3-00338204v1
	Dipolar plasma source modeling: a first approach Stéphane Béchu , Tran Than Vinh , A. Lacoste , A. Bès , M. Rayar COMSOL Conference, Oct 2007, Grenoble, France. A paraître, 2007 Conference poster in2p3-00180413v1
	Investigation of H- production by surface interaction of the plasma generated in "camembert III" reactor via Distributed Electron Cyclotron Resonance (DECR) at 2.45 GHz (abstract) Stéphane Béchu , A. Bès , Didier Lemoine , J. Pelletier , M. Bacal 12th International Conference on Ion Sources (ICIS'07), 2007, Jeju, South Korea. American Institute of Physics, 79, pp.02A505, 2008, ⟨10.1063/1.2821592⟩ Conference poster in2p3-00180470v1
	Production of large area low-energy electron beams by extraction from a multi-dipolar plasma (abstract) A. Lacoste , Stéphane Béchu , O. Maulat , J. Pelletier , Y. Arnal 12th International Conference on Ion Sources (ICIS'07), 2007, Jeju, South Korea. American Institute of Physics, 79, pp.02B503, 2008, ⟨10.1063/1.2821591⟩ Conference poster in2p3-00180465v1

	ECR–Driven Negative Ion Sources Operating with Hydrogen and Deuterium P. Svarnas , M. Mitrou , J. Lemaire , L. Gavilan , N. de Oliveira Marthe Bacal. Physics and Applications of Hydrogen Negative Ion Sources, 124, Springer International Publishing, pp.303-347, 2023, Springer Series on Atomic, Optical, and Plasma Physics, 978-3-031-21475-2. ⟨10.1007/978-3-031-21476-9_12⟩ Book sections hal-04280385v1
	Helicon volume production of H$^−$ and D$^−$ using a resonant birdcage antenna on RAID Ivo Furno , Riccardo Agnello , Alan Howling , Philippe Guittienne , Remy Jacquier Physics and Applications of Hydrogen Negative Ion Sources, 124, Springer International Publishing, pp.217-249, 2023, Springer Series on Atomic, Optical, and Plasma Physics, 978-3-031-21475-2. ⟨10.1007/978-3-031-21476-9_9⟩ Book sections hal-04280387v1
	Des sources plasma micro-onde dipolaires aux plasmas matriciels Tran Tan Vin , Stéphane Béchu , A. Bès , L. Latrasse , A. Lacoste Th. Belmonte. Plasmas Froids. Systèmes et procédés, Publications de l'Université de Saint-Etienne, pp.85-121, 2008, Intégrations Book sections in2p3-00390941v1
	Plasmas micro-onde basses pressions exités à la résonance cyclotronique électronique Yves Arnal , Stéphane Béchu , Ana Lacoste , O. Maulat , Jacques Pelletier Massines, Françoise. Plasmas froids. Génération, caractérisation et technologies, 3, PUSE-MRCT-CNRS, pp.323-352, 2004, Intégrations [des savoirs et savoir-faire], 2862723398 Book sections hal-01481532v1
	Mesures de sondes électrostatiques en plasma basse pression Stéphane Béchu Massines, Françoise. Plasmas froids. Génération, caractérisation et technologies, 3, PUSE-MRCT-CNRS, pp.159-224, 2004, Intégrations [des savoirs et savoir-faire], 2862723398 Book sections hal-01481543v1

Stéphane Béchu

Publications

Isotope effect in plasmas driven by ECR modules towards H– and D– production

Latest experimental and theoretical advances in the production of negative ions in caesium-free plasmas

Direct measurements of electronic ground state ro-vibrationally excited D$_2$ molecules produced on ECR plasma-facing materials by means of VUV-FT absorption spectroscopy

Negative ion characterization in a helicon plasma source for fusion neutral beams by cavity ring-down spectroscopy and Langmuir probe laser photodetachment

Magnetic field configurational study on A Helicon-Based Plasma Source for Future Neutral Beam Systems

Cavity ring-down spectroscopy to measure negative ion density in a helicon plasma source for fusion neutral beams

Effects of the plasma-facing materials on the negative ion H− density in an ECR (2.45 GHz) plasma

Production of hydrogen negative ions in an ECR volume source: balance between vibrational excitation and ionization

Detection of rovibrationally excited molecular hydrogen in the electronic ground state via synchrotron radiation

Characterization of X-ray gas attenuator plasmas by optical emission and tunable laser absorption spectroscopies

Spectroscopic characterization of H2 and D2 helicon plasmas generated by a resonant antenna for neutral beam applications in fusion

Kinetics of electron states of hydrogen molecules in nonequilibrium discharges: Singlet states

Experimental investigation of the relation between H− negative ion density and Lyman-α emission intensity in a microwave discharge

Negative ion source development for a photoneutralization based neutral beam system for future fusion reactors

Emission spectroscopy of a dipolar plasma source in hydrogen under low pressures

Excitation kinetics of electronic states of hydrogen molecules in nonequilibrium discharges: Electronic ground state

R&D around a photoneutralizer-based NBI system (Siphore) in view of a DEMO Tokamak steady state fusion reactor

Investigation of Mg2(Si,Sn) thin films for integrated thermoelectric devices

MgH2 thin films deposited by one-step reactive plasma sputtering

H− Negative Ion Production From a 2D Network of ECR Dipolar Plasma Sources

An open-ended coaxial plasma source with extended operating parameters: plasma impedance, coupling and energy efficiency

Multi-dipolar microwave plasmas and their application to negative ion production

Thermoelectric properties of thin ﬁlms of Sb doped Mg2Si1 xSnx solid solutions

Deposition of thin films of Mg2Si1-xSnx solid solution by plasma-assisted co-sputtering.

Study of hydrogen plasma in the negative-ion extraction region

Extraction of large-area low-energy electron beams from a multi-dipolar plasma

Bulk and thin films of magnetic shape memory Ni-Mn-Ga alloys deposited by multi-dipolar plasma-assisted sputtering

H- extraction from electron-cyclotron-resonance-driven multicusp volume source operated in pulsed mode

Comparison between Langmuir probe and microwave autointerferometry measurements at intermediate pressure in an argon surface wave discharge

Nitrogen profiles in materials implanted via plasma-based ion implantation

Laser–induced photo-detachment diagnostic for interrogating pulsed ECR–driven plasmas: Application to H$^−$ and D$^−$ negative ions

Investigation of the ro-vibrational levels of H$_2$/D$_2$ molecules by VUV-absorption spectroscopy for the production of H$^-$/D$^-$negative ions for fusion application

Investigation of the ro-vibrational levels of D2 molecules by VUV-absorption spectroscopy for the production of D- negative ions for fusion application

H$^-$ and D$^-$ production efficiency in a multi-dipole ECR-plasma source as a function of gas pressure

Experimental study on dynamic effects of H − and D − negative ions in an ECR-plasma source

Experimental study on dynamic effects of H$^-$ and D$^-$ negative ions in an ECR-plasma source

3D Rarefied Molecular Flow Simulation To Understand Measurements Performed In Deuterium Plasmas

Physics of helicon waves and negative ions in the Resonant Antenna Ion Device (RAID)

Characterization of a distributed antenna array microwave plasma used for low-temperature/large-area nanocrystalline diamond film deposition

Cs-free negative ion source: from rovibrationnal states of H 2 /D 2 molecules to the extraction of negative ions

Laser-aided plasma diagnostics of a helicon plasma source for fusion neutral beams

First B-dot measurements in the RAID device, an alternative negative ion source for DEMO neutral beams

Elementary microwave plasma sources with extended operating parameters (from low to high- pressures) for large area deposition

Plasma processes controlled by the adjustment of particle and energy fluxes

Effects of plasma-facing materials on the negative ion (H-/D-) current extracted from an ECR plasma source

A novel helicon plasma source for negative ion beams for fusion

Experimental study of H atom recombination on different surfaces in relation to H− negative ion production

Coupling modes in a dipolar microwave plasma source (2.45GHz)

Emission spectroscopy of dipolar plasma source in low pressure hydrogen

Plasma properties of the cybele negative ion source for fusion applications: PIC simulations and experiments

Plamas micro-onde basse pression et procédé associés

Low-pressure plasma sources with localized power absorption operating from 0.35 to 2.45 GHz

Investigation of Mg2(Si,Sn) thin films for integrated thermoelectric devices

Study of the vibrational distribution function of the hydrogen molecule in the ground state X1Sigma+g in gas discharges

Mesures des paramètres électrostatiques d’un plasma par sonde de Langmuir

Ion source development for a photoneutralization based NBI system of fusion reactors

Electrostatic probe and laser photodetachment measurements in the hydrogen negative ion (H-) source "Prometheus I"

Experimental and numerical simulation of the vibrational distribution function of the hydrogen molecule in the ground state X1Σ+g in gas discharges

Plasma processes controlled by the adjustment of particle and energy fluxes

Laser photo-detachment measurements in the ECR driven H-negative ion source PROMETHEUS I

Advances and issues of microwave plasmas

Dispositif de mesure des paramètres plasma par sonde de Langmuir : QUË ÐO

Technologies micro-ondes : solutions adaptées à des problématiques spécifiques

Mesures expérimentale de la fonction de distribution en énergie des électrons (FDEE)

Surface vicinity production of negative ions

Production of H- ions by surface mechanisms in Cs-free multi-dipolar microwave plasma

Vibrationnally excited H2 formation on graphite surface

Study of the plasma near the plasma electrode by probes and photodetachment in ECR-driven negative ion source

Plasma-based ion implantation : a valuable technology for the elaboration of innovative materials and nano-structured thin films

Cylindrical SDBD of well-defined expansion area for standardised studies

Laser-induced photodetachment diagnostic for interrogating pulsed ECR-driven plasmas: Application to H- and D- negative ions

Distributed microwave plasma sources: coupling modes and operation at high pressure for large area deposition

Modelling and characterisation of elementary microwave plasma sources at medium pressure (1 to 50 Torr) for high rate deposition

Spectroscopic measurements of hydrogen dissociation degree and H- production in resonant antenna-generated plasmas

Study of the production of vibrationally excited molecules of hydrogen H2(X1Σg,v’’) on surfaces by indirect and direct diagnostics

VUV emission spectroscopy combined with H- density measurements in the ion source Prometheus I

Study of the rovibrational levels of ground state excited hydrogen molecules by laser photodetachment and emission spectroscopy

Effect of Sb‐doping on the thermoelectric properties of Mg2Si thin films synthesized by microwave plasma‐assisted co‐sputtering

Isotope effect in plasmas driven by ECR modules towards H^– and D^– production

Effects of the plasma-facing materials on the negative ion H⁻ density in an ECR (2.45 GHz) plasma

H⁻ Negative Ion Production From a 2D Network of ECR Dipolar Plasma Sources

Experimental study of H atom recombination on different surfaces in relation to H⁻ negative ion production