Stéphane Béchu

100
Documents

Publications

Publications

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Effect of Highly Ordered Pyrolytic Graphite Surfaces on the Production of H- Negative Ions in ECR-Driven Plasmas

J Bentounes , S Béchu , P Svarnas , A Bès , D Fombaron et al.
IEEE Transactions on Plasma Science, 2024, 52 (2), pp.407-414. ⟨10.1109/TPS.2024.3358586⟩
Article dans une revue hal-04804029 v1
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Isotope effect in plasmas driven by ECR modules towards H<sup>–</sup> and D<sup>–</sup> production

M Mitrou , P Svarnas , S Béchu , S Aleiferis
Plasma Sources Science and Technology, 2023, 32 (10), pp.105001. ⟨10.1088/1361-6595/acfbf5⟩
Article dans une revue hal-04260490 v1
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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 et al.
The European Physical Journal D : Atomic, molecular, optical and plasma physics, 2021, 75 (8), pp.227. ⟨10.1140/epjd/s10053-021-00228-y⟩
Article dans une revue hal-03325804 v1
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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 et al.
Journal of Quantitative Spectroscopy and Radiative Transfer, 2020, 257, pp.107325. ⟨10.1016/j.jqsrt.2020.107325⟩
Article dans une revue hal-03043281 v1
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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 et al.
Nuclear Fusion, 2020, 60, pp.026007. ⟨10.1088/1741-4326/ab5e64⟩
Article dans une revue hal-03049113 v1
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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 et al.
Plasma Sources Science and Technology, 2019, 28 (9), pp.095005. ⟨10.1088/1361-6595/ab3705⟩
Article dans une revue hal-02375711 v1

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 et al.
Review of Scientific Instruments, 2018, 89 (10), pp.103504. ⟨10.1063/1.5044504⟩
Article dans une revue hal-01952212 v1

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

J. Bentounes , Stéphane Béchu , F. Biggins , A. Michau , Lisseth Gavilan et al.
Plasma Sources Science and Technology, 2018, 27 (5), pp.055015. ⟨10.1088/1361-6595/aac0ed⟩
Article dans une revue insu-01806396 v1

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⟩
Article dans une revue hal-01856810 v1
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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 et al.
Applied Physics Letters, 2017, 111, pp.074103. ⟨10.1063/1.4985617⟩
Article dans une revue insu-01616219 v1

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⟩
Article dans une revue hal-01645834 v1

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 et al.
Nuclear Fusion, 2017, 57, pp.036024. ⟨10.1088/1741-4326/aa53eb⟩
Article dans une revue in2p3-01452728 v1

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⟩
Article dans une revue in2p3-01294682 v1

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⟩
Article dans une revue in2p3-01376128 v1
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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 et al.
New Journal of Physics, 2016, 18 (12), pp.125005. ⟨10.1088/1367-2630/18/12/125005⟩
Article dans une revue hal-02380026 v1

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⟩
Article dans une revue in2p3-01272018 v1

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⟩
Article dans une revue in2p3-01250612 v1
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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 et al.
Nuclear Fusion, 2015, 55 (12), pp.123020. ⟨10.1088/0029-5515/55/12/123020⟩
Article dans une revue hal-02381781 v1

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

C. Prahoveanu , A. Lacoste , Stéphane Béchu , C. de Vaulx , K. Azzouz et al.
Journal of Alloys and Compounds, 2015, 649, pp.573-578. ⟨10.1016/j.jallcom.2015.07.043⟩
Article dans une revue in2p3-01214469 v1

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⟩
Article dans une revue in2p3-01091992 v1

H<sup>&#x2212;</sup> Negative Ion Production From a 2D Network of ECR Dipolar Plasma Sources

S. Aleiferis , P. Svarnas , I. Tsiroudis , Stéphane Béchu , M. Bacal et al.
IEEE Transactions on Plasma Science, 2014, 42 (10), pp.2828-2829. ⟨10.1109/TPS.2014.2330421⟩
Article dans une revue in2p3-01094310 v1

MgH2 thin films deposited by one-step reactive plasma sputtering

H. Le-Quoc , A. Lacoste , S. Miraglia , Stéphane Béchu , A. Bès et al.
International Journal of Hydrogen Energy, 2014, 39 (31), pp.17718-17725. ⟨10.1016/j.ijhydene.2014.08.096⟩
Article dans une revue in2p3-01068590 v1

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⟩
Article dans une revue istex in2p3-00749377 v1

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

Stéphane Béchu , A. Soum-Glaude , A. Bès , A. Lacoste , P. Svarnas et al.
Physics of Plasmas, 2013, 20, pp.101601. ⟨10.1063/1.4823466⟩
Article dans une revue in2p3-00870733 v1

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 et al.
Journal of Alloys and Compounds, 2012, 538, pp.73-78. ⟨10.1016/j.jallcom.2012.06.003⟩
Article dans une revue istex hal-00961258 v1

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⟩
Article dans une revue istex in2p3-00354123 v1

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⟩
Article dans une revue istex in2p3-00410312 v1

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 et al.
Journal of Alloys and Compounds, 2008, 465, pp.35-40. ⟨10.1016/j.jallcom.2007.11.087⟩
Article dans une revue istex in2p3-00339190 v1

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⟩
Article dans une revue in2p3-00372721 v1

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⟩
Article dans une revue in2p3-00372705 v1

Nitrogen profiles in materials implanted via plasma-based ion implantation

A. Lacoste , Stéphane Béchu , Y. Arnal , J. Pelletier , Corentin Vallée et al.
Surface and Coatings Technology, 2002, 156 (1-3), pp.125-130. ⟨10.1016/S0257-8972(02)00076-2⟩
Article dans une revue istex hal-00669437 v1
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ATOMIC AND MOLECULAR DEUTERIUM DENSITIES IN A PULSED RF DISCHARGE USING VUV ABSORPTION SPECTROSCOPY

Nelson de Oliveira , Laurent Nahon , Stéphane Béchu , M Mitrou
The 27th International Conference on High-Resolution Molecular Spectroscopy Bologna, Italy, September 2–6, 2024, Sep 2024, Bologna (ITALY), Italy. pp.118
Communication dans un congrès hal-04780405 v1
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High resolution VUV absorption spectroscopy @ the synchrotron SOLEIL: an efficient diagnostic for plasma physics.

Stéphane Béchu , Jean-Louis Lemaire , Maria Mitrou , Nelson de Oliveira , Laurent Bonny et al.
Plasma thin film international union meeting, SFV, Sep 2024, Antibes, France
Communication dans un congrès hal-04780564 v1
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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
Communication dans un congrès hal-04285360 v1

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 et al.
31st Summer School and International Symposium on the Physics of Ionized Gases, Sep 2022, Belgrade, Serbia
Communication dans un congrès hal-03852868 v1
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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⟩
Communication dans un congrès hal-03434717 v2
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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
Communication dans un congrès hal-04285395 v1
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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 (ICIS2021), Sep 2021, Online, Canada. pp.012006, ⟨10.1088/1742-6596/2244/1/012006⟩
Communication dans un congrès hal-03654984 v1

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

S. Béchu , M Mitrou , P Svarnas , J L Lemaire , A Bès et al.
COMSOL Conference EUROPE, Oct 2020, Grenoble, France
Communication dans un congrès hal-03063791 v1
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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 et al.
29th International Toki Conference on Plasma and Fusion Research (ITC 29), Oct 2020, Toki, Japan
Communication dans un congrès hal-03434682 v2

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
Communication dans un congrès hal-03049712 v1

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

Ivo Furno , R. Agnello , Y Andrebe , H Arnichaud , P. Blanchard et al.
19th International Symposium on Laser-Aided Plasma Diagnostics 2019 (LAPD19), Sep 2019, Whitefish, United States
Communication dans un congrès hal-03049709 v1

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 et al.
30th Symposium on Fusion Technology (SOFT-30), Sep 2018, Messina, Italy. pp.1140-1144, ⟨10.1016/j.fusengdes.2019.02.025⟩
Communication dans un congrès hal-02277789 v1

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 et al.
Cold Plasmas, Fundamentals and Applications, Sep 2019, ERICE, Italy
Communication dans un congrès hal-03049704 v1

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⟩
Communication dans un congrès in2p3-01711805 v1

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 et al.
XXXIII International Conference on Phenomena in Ionized Gases (ICPIG 2017), Jul 2017, Estoril, Portugal. pp.63
Communication dans un congrès in2p3-01572034 v1

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
Communication dans un congrès in2p3-01541651 v1
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Experimental study of H atom recombination on different surfaces in relation to H<sup>−</sup> negative ion production

S. Aleiferis , J. Bentounes , Stéphane Béchu , P. Svarnas , Alexandre Bés et al.
5th International Symposium on Negative Ions, Beams and Sources (NIBS’16), Sep 2016, Oxford, United Kingdom. pp.020011, ⟨10.1063/1.4995717⟩
Communication dans un congrès insu-01616032 v1

A novel helicon plasma source for negative ion beams for fusion

I. Furno , R. Agnello , B.P. Duval , C. Marini , A.A. Howling et al.
5th International Symposium on Negative Ions, Beams and Sources (NIBS’16), Sep 2016, Oxford, United Kingdom
Communication dans un congrès in2p3-01367553 v1

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 et al.
4th International Symposium on Negative Ions, Beams and Sources (NIBS2014), Oct 2014, Garching, Germany. pp.050002, ⟨10.1063/1.4916459⟩
Communication dans un congrès in2p3-01122665 v1

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
Communication dans un congrès in2p3-01231366 v1

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
Communication dans un congrès in2p3-01217122 v1

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 et al.
42nd IEEE International Conference on Plasma Science (ICOPS), May 2015, Belek, Turkey. ⟨10.1109/PLASMA.2015.7179519⟩
Communication dans un congrès in2p3-01391481 v1

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
Communication dans un congrès in2p3-01128593 v1

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 et al.
20th International Conference on Gas Discharges and their Applications (gd 2014), Jul 2014, Orléans, France. pp.sciencesconf.org:gd2014:27348
Communication dans un congrès in2p3-01244357 v1

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
Communication dans un congrès in2p3-01185857 v1

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
Communication dans un congrès in2p3-01123830 v1

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
Communication dans un congrès in2p3-01016958 v1

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

C. Prahoveanu , A. Lacoste , C. de Vaulx , K. Azzouz , Stéphane Béchu et al.
International Conference on Thermoelectrics (ICT2014), Jul 2014, Nashville, United States
Communication dans un congrès in2p3-01026194 v1

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
Communication dans un congrès in2p3-01185363 v1

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
Communication dans un congrès in2p3-01009511 v1

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⟩
Communication dans un congrès hal-02894186 v1

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
Communication dans un congrès in2p3-01016895 v1

Technologies micro-ondes : solutions adaptées à des problématiques spécifiques

A. Lacoste , Stéphane Béchu , A. Bès
Journée Plasmas et Energie, Sep 2011, Grenoble, France
Communication dans un congrès in2p3-01017303 v1

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
Communication dans un congrès in2p3-00612027 v1

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
Communication dans un congrès in2p3-01016893 v1

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
Communication dans un congrès in2p3-01017234 v1
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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⟩
Communication dans un congrès in2p3-00336457 v1

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⟩
Communication dans un congrès in2p3-00336454 v1

Vibrationnally excited H2 formation on graphite surface

Stéphane Béchu
ARCHES Workshop - Elementary mechanisms of hydrogen / carbon-surface interactions, Oct 2008, Marseille, France
Communication dans un congrès in2p3-00338209 v1
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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 et al.
12th International Congress on Plasma Physics, Oct 2004, Nice, France
Communication dans un congrès hal-00002030 v1
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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
Poster de conférence hal-04285204 v1
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Cylindrical SDBD of well-defined expansion area for standardised studies

Konstantinos Giotis , Panagiotis Svarnas , Maria Mitrou , Kristaq Gazeli , Guillaume Lombardi et al.
International Conference on Phenomena in Ionized Gases (XXXV ICPIG), Jul 2023, Egmond aan Zee, Netherlands
Poster de conférence hal-04285292 v1

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.
Poster de conférence in2p3-01541647 v1

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
Poster de conférence in2p3-01572036 v1

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 et al.
43rd Conference on Plasma Physics, Jul 2016, Leuven, Belgium.
Poster de conférence in2p3-01357794 v1

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 et al.
1st EUCASS Aerospace Thematic Workshop: Collisions of Fast Particles with Surfaces, Sep 2016, Aussois, France.
Poster de conférence in2p3-01372233 v1

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

S. Aleiferis , J. Laulainen , P. Svarnas , O. Tarvainen , M. Bacal et al.
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⟩
Poster de conférence in2p3-01367559 v1

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 et al.
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
Poster de conférence in2p3-01174010 v1

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 et al.
34th Annual International Conference on Thermoelectrics & 13th European Conference on Thermoelectrics (ICT & ECT 2015), Jun 2015, Dresden, Germany
Poster de conférence in2p3-01176819 v1

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 et al.
12èmes Journées d’Echange du Réseau Plasmas Froids, Oct 2014, La Rochelle, France
Poster de conférence in2p3-01128599 v1

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
Poster de conférence in2p3-00943157 v1

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 et al.
12èmes Journées d’Echange du Réseau Plasmas Froids, Oct 2014, La Rochelle, France
Poster de conférence in2p3-01128596 v1

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 et al.
Ecole Thermoélectricité 2014, 2014, Annecy, France
Poster de conférence in2p3-01009972 v1

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
Poster de conférence in2p3-00733289 v1

Surface mechanisms investigation for negative ion production

Stéphane Béchu , A. Soum-Glaude , A. Bès , P. Svarnas , M. Bacal et al.
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
Poster de conférence in2p3-00721930 v1

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
Poster de conférence in2p3-00721931 v1

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
Poster de conférence in2p3-01017325 v1

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
Poster de conférence in2p3-00721932 v1

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 et al.
8th European Conference on Thermoelectrics (ECT 2010), Sep 2010, Como, Italy. 4 p., 2010
Poster de conférence in2p3-00530474 v1

Distribution of H- ions in the vicinity of the extraction aperture

M. Bacal , P. Svarnas , J. Breton , Stéphane Béchu , Didier Lemoine et al.
19th Europhysics Conference on the Atomic and Molecular Physics of Ionized Gases (ESCAMPIG), 2008, Granada, Spain
Poster de conférence in2p3-00338204 v1

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 et al.
Xe Congrès de la Division Plasmas de la Société Française de Physique, May 2008, Paris, France
Poster de conférence in2p3-00281919 v1
Image document

Dipolar plasma source modeling: a first approach

Stéphane Béchu , Tran Than Vinh , A. Lacoste , A. Bès , M. Rayar et al.
COMSOL Conference, Oct 2007, Grenoble, France. A paraître, 2007
Poster de conférence in2p3-00180413 v1

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⟩
Poster de conférence in2p3-00180465 v1

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⟩
Poster de conférence in2p3-00180470 v1
Image document

Helicon volume production of H$^−$ and D$^−$ using a resonant birdcage antenna on RAID

Ivo Furno , Riccardo Agnello , Alan Howling , Philippe Guittienne , Remy Jacquier et al.
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⟩
Chapitre d'ouvrage hal-04280387 v1
Image document

ECR–Driven Negative Ion Sources Operating with Hydrogen and Deuterium

P. Svarnas , M. Mitrou , J. Lemaire , L. Gavilan , N. de Oliveira et al.
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⟩
Chapitre d'ouvrage hal-04280385 v1

Des sources plasma micro-onde dipolaires aux plasmas matriciels

Tran Tan Vin , Stéphane Béchu , A. Bès , L. Latrasse , A. Lacoste et al.
Th. Belmonte. Plasmas Froids. Systèmes et procédés, Publications de l'Université de Saint-Etienne, pp.85-121, 2008, Intégrations
Chapitre d'ouvrage in2p3-00390941 v1

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
Chapitre d'ouvrage hal-01481532 v1

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
Chapitre d'ouvrage hal-01481543 v1