Pulsed DC bias for the study of negative-ion production on surfaces of insulating materials in low pressure hydrogen plasmas

Autor: D. Kogut, Jocelyn Achard, Jean-Marc Layet, A. Boussadi, A. Gicquel, K. Achkasov, Alain Simonin, G. Cartry, R. Moussaoui, E. Garabedian

Publikováno v: Journal of Applied Physics
Journal of Applied Physics, American Institute of Physics, 2019, 125 (3), pp.033303. ⟨10.1063/1.5054607⟩
Journal of Applied Physics, 2019, 125 (3), pp.033303. ⟨10.1063/1.5054607⟩

In this work, negative-ion production on the surface of a sample negatively DC biased in a hydrogen plasma is studied. The negative ions created under positive ion bombardment are accelerated toward the plasma, self-extracted, and detected according

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0186de94fa909711da58ab87ae76cb6a
https://hal-amu.archives-ouvertes.fr/hal-02310927/document

Alternative solutions to caesium in negative-ion sources: a study of negative-ion surface production on diamond in H 2 /D 2 plasmas

Autor: K. Achkasov, G. Cartry, D. Kogut, Ovidiu Brinza, Thomas Farley, Hocine Khemliche, Philippe Roncin, Alain Simonin, Thomas Bieber, Jocelyn Achard, Jean-Marc Layet, A. Gicquel

Publikováno v: New Journal of Physics
New Journal of Physics, Institute of Physics: Open Access Journals, 2017, 19 (2), pp.025010. ⟨10.1088/1367-2630/aa5f1f⟩
New Journal of Physics, 2017, 19 (2), pp.025010. ⟨10.1088/1367-2630/aa5f1f⟩
New Journal of Physics, Institute of Physics: Open Access Journals, 2017, 19, ⟨10.1088/1367-2630/aa5f1f⟩

International audience; This paper deals with a study of H-/D- negative ion surface production on diamond in low pressure H-2/D-2 plasmas. Asample placed in the plasma is negatively biased with respect to plasma potential. Upon positive ion impacts o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b81a88f17957993e3fe58a732efda854

Study of hydrogen isotopes behavior in tungsten by a multi trapping macroscopic rate equation model

Autor: Régis Bisson, Nicolas Fernandez, Yves Ferro, Jean-Marc Layet, Charlotte Becquart, Christian Grisolia, Etienne Hodille, Thierry Angot

Publikováno v: Physica Scripta
Physica Scripta, IOP Publishing, 2016, T167, pp.014011. ⟨10.1088/0031-8949/2016/T167/014011⟩
Physica Scripta, 2016, T167, pp.014011. ⟨10.1088/0031-8949/2016/T167/014011⟩

International audience; Density functional theory (DFT) studies show that in tungsten a mono vacancy can contain up to six hydrogen isotopes (HIs) at 300 K with detrapping energies varying with the number of HIs inthe vacancy. Using these predictions

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::97dbff21a20384b05e2fd9242ed4d717
https://hal-amu.archives-ouvertes.fr/hal-01252995

Structural Properties of Iron Phtalocyanines on Ag(111): From the Submonolayer to Monolayer Range

Autor: Thierry Angot, Jean-Marc Layet, Eric Salomon, S.C. Bobaru

Publikováno v: The Journal of Physical Chemistry C. 115:5875-5879

An experimental investigation of the epitaxial growth of iron-phthalocyanines on Ag(111) has been conducted in the monolayer range by low-energy electron diffraction and scanning tunneling microscopy. During the growth, the molecular overlayer underg

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5255f8f059510bc77da5a025496a4766
https://doi.org/10.1021/jp111715a

Positive sheath behaviour in low pressure Argon plasma

Autor: Jean-Marc Layet, M. Carrere, Loic Schiesko, Gilles Cartry

Publikováno v: Journal of Nuclear Materials. :1016-1020

We measure positive ions by means of a Hiden mass spectrometer (EQP 300) in a helicon discharge. Our helicon ‘PHISIS’ (plasma helicon to irradiate surfaces in situ) is used at low injected RF power, in a capacitive regime. A copper sample is cent

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::604de2bf92ea2c1d28fab665ed5cb77b
https://doi.org/10.1016/j.jnucmat.2007.01.137