A. W. Kleyn, W. Koppers, and N. L. Cardozo, Plasma???surface interaction in ITER, Vacuum, vol.80, issue.10, pp.1098-1106, 2006.
DOI : 10.1016/j.vacuum.2006.02.019

R. E. Nygren, R. Raffray, D. Whyte, M. A. Urickson, M. Baldwin et al., Making tungsten work ??? ICFRM-14 session T26 paper 501 Nygren et al. making tungsten work, Journal of Nuclear Materials, vol.417, issue.1-3, pp.451-456, 2011.
DOI : 10.1016/j.jnucmat.2010.12.289

D. M. Goebel, G. Campbell, and R. W. Conn, Plasma surface interaction experimental facility (PISCES) for materials and edge physics studies, Journal of Nuclear Materials, vol.121, pp.277-282, 1984.
DOI : 10.1016/0022-3115(84)90135-1

F. Maury, M. Biget, P. Vajda, A. Lucasson, and P. Lucasson, Frenkel pair creation and stage I recovery in W crystals irradiated near threshold, Radiation Effects, vol.8, issue.1-2, pp.53-65, 1978.
DOI : 10.1080/00337577708233111

A. E521-9, Standard Practice for Neutron Radiation Damage Simulation by Charge- Particle Irradiation, Annu. B. ASTM Stand, p.1, 1996.

D. Nishijima, M. Y. Ye, N. Ohno, and S. Takamura, Formation mechanism of bubbles and holes on tungsten surface with low-energy and high-flux helium plasma irradiation in NAGDIS-II, Journal of Nuclear Materials, vol.329, issue.333, pp.329-333, 2004.
DOI : 10.1016/j.jnucmat.2004.04.129

M. J. Baldwin and R. P. Doerner, Helium induced nanoscopic morphology on tungsten under fusion relevant plasma conditions, Nuclear Fusion, vol.48, issue.3, 2008.
DOI : 10.1088/0029-5515/48/3/035001

M. Tokitani, S. Kajita, S. Masuzaki, Y. Hirahata, N. Ohno et al., Exfoliation of the tungsten fibreform nanostructure by unipolar arcing in the LHD divertor plasma, Nuclear Fusion, vol.51, issue.10, pp.29-5515, 2011.
DOI : 10.1088/0029-5515/51/10/102001

S. B. Gilliam, S. M. Gidcumb, N. R. Parikh, D. G. Forsythe, B. K. Patnaik et al., Retention and surface blistering of helium irradiated tungsten as a first wall material, Journal of Nuclear Materials, vol.347, issue.3, pp.289-297, 2005.
DOI : 10.1016/j.jnucmat.2005.08.017

K. Wang, M. E. Bannister, F. W. Meyer, and C. M. Parish, Effect of starting microstructure on helium plasma-materials interaction in tungsten, Acta Materialia, vol.124, 2017.
DOI : 10.1016/j.actamat.2016.11.042

F. Hofmann, D. Nguyen-manh, C. E. Beck, J. K. Eliason, M. R. Gilbert et al., Lattice swelling and modulus change in a helium-implanted tungsten alloy: X-ray micro-diffraction, surface acoustic wave measurements, and multiscale modelling, Acta Materialia, vol.89, pp.352-363, 2015.
DOI : 10.1016/j.actamat.2015.01.055

L. Pentecoste, P. Brault, A. Thomann, P. Desgardin, T. Lecas et al., Low energy and low fluence helium implantations in tungsten: Molecular dynamics simulations and experiments, Journal of Nuclear Materials, vol.470, pp.44-54, 2016.
DOI : 10.1016/j.jnucmat.2015.12.017

URL : https://hal.archives-ouvertes.fr/hal-01243223

L. Pentecoste, A. Thomann, A. Melhem, A. Caillard, S. Cuynet et al., Low flux and low energy helium ion implantation into tungsten using a dedicated plasma source, Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, vol.383, pp.38-46, 2016.
DOI : 10.1016/j.nimb.2016.06.011

URL : https://hal.archives-ouvertes.fr/hal-01343361

P. E. Lhuillier, T. Belhabib, P. Desgardin, B. Courtois, T. Sauvage et al., Helium retention and early stages of helium-vacancy complexes formation in low energy helium-implanted tungsten, Journal of Nuclear Materials, vol.433, issue.1-3, pp.305-313, 2013.
DOI : 10.1016/j.jnucmat.2012.09.001

URL : https://hal.archives-ouvertes.fr/hal-00757746

J. P. Corbel, F. Piron, A. Labohm, and . Van-veen, Profile measurements of helium implanted in UO2 sintered pellets by using the 3He(d, ?)1H nuclear reaction analysis technique, J. Nucl. Mater, vol.327, pp.159-164, 2004.

. Pászti, Microanalysis of He using charged particle accelerators, Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, vol.66, issue.1-2, pp.83-106, 1992.
DOI : 10.1016/0168-583X(92)96143-M

J. Roth, B. M. Scherzer, R. Behrisch, and P. Børgesen, The replacement of 3He implanted in Nb by subsequent 4He bombardment and vice versa, Nuclear Instruments and Methods, vol.149, issue.1-3, pp.75-81, 1978.
DOI : 10.1016/0029-554X(78)90837-6

R. Schulz, R. Behrisch, and B. M. Scherzer, D and 3He trapping and mutual replacement in molybdenum, Nuclear Instruments and Methods, vol.168, issue.1-3, pp.295-299, 1980.
DOI : 10.1016/0029-554X(80)91268-9

W. Jaeger and J. Roth, He trapping and bubble formation in Ni, stainless steel 316 and amourphous alloys, Nucl. Instruments Methods, vol.182, issue.81, pp.975-99810, 1980.

A. Debelle, M. F. Barthe, and T. Sauvage, First temperature stage evolution of irradiationinduced defects in tungsten studied by positron annihilation spectroscopy, J. Nucl. Mater, vol.376, 2008.

P. Desgardin, L. Liszkay, M. Barthe, L. Henry, J. Briaud et al., Slow Positron Beam Facility in Orl??ans, Materials Science Forum, vol.363, issue.365, pp.363-365, 2001.
DOI : 10.4028/www.scientific.net/MSF.363-365.523

R. Krause-rehberg and H. S. Leipner, Positron annihilation in semiconductors: defect studies, 1999.
DOI : 10.1007/978-3-662-03893-2

V. Sabelová, V. Kr?jak, J. Kuriplach, Y. Dai, and V. Sluge?, Coincidence Doppler broadening study of Eurofer 97 irradiated in spallation environment, Journal of Nuclear Materials, vol.458, 2015.
DOI : 10.1016/j.jnucmat.2014.12.053

S. T. Picraux and F. L. Vook, Ion beam studies of H and He in metals, Journal of Nuclear Materials, vol.53, pp.246-251, 1974.
DOI : 10.1016/0022-3115(74)90251-7

H. J. Berendsen, J. P. Postma, W. F. Van-gunsteren, A. Dinola, and J. R. Haak, Molecular dynamics with coupling to an external bath, The Journal of Chemical Physics, vol.15, issue.8, pp.3684-3690, 1984.
DOI : 10.1039/fs9821700055

J. Roth, E. Tsitrone, A. Loarte, T. Loarer, G. Counsell et al., Recent analysis of key plasma wall interactions issues for ITER, Journal of Nuclear Materials, vol.390, issue.391, pp.390-391, 2009.
DOI : 10.1016/j.jnucmat.2009.01.037

N. Juslin and B. D. Wirth, Interatomic potentials for simulation of He bubble formation in W, Journal of Nuclear Materials, vol.432, issue.1-3, p.28
DOI : 10.1016/j.jnucmat.2012.07.023

D. E. Beck, A new interatomic potential function for helium, Molecular Physics, vol.14, issue.4, pp.311-315, 1968.
DOI : 10.1080/00268976700100601

W. Humphrey, A. Dalke, and K. Schulten, VMD: Visual molecular dynamics, Journal of Molecular Graphics, vol.14, issue.1, pp.33-3810, 1996.
DOI : 10.1016/0263-7855(96)00018-5

G. J. Thomas and R. Bastasz, Direct evidence for spontaneous precipitation of helium in metals, Journal of Applied Physics, vol.135, issue.10, pp.6426-6428, 1981.
DOI : 10.1103/PhysRev.135.A521

W. D. Wilson, C. L. Bisson, and M. I. Baskes, Self-trapping of helium in metals, Physical Review B, vol.50, issue.10, pp.5616-5624, 1981.
DOI : 10.1016/0375-9601(74)90056-5

K. O. Henriksson, K. Nordlund, and J. Keinonen, Molecular dynamics simulations of helium cluster formation in tungsten, Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, vol.244, issue.2, pp.377-391, 2006.
DOI : 10.1016/j.nimb.2005.10.020

L. M. Caspers, R. H. Pastenau, A. Van-veen, and W. F. Van-heugten, Mutation of vacancies to divacancies by helium trapping in molybdenum effect on the onset of percolation, Physica Status Solidi (a), vol.20, issue.2, pp.541-546, 1978.
DOI : 10.1002/pssa.2210460218

M. S. Keriem, D. P. Van-der-werf, and F. Pleiter, Trap mutation in He-doped ion-implanted tungsten, Hyperfine Interactions, vol.51, issue.16, pp.787-791, 1993.
DOI : 10.1007/BF00567609

E. Kornelsen and A. A. Van-gorkum, Enhanced penetration of low energy (25 eV-5000 eV) helium along the (100) channel in tungsten, Nucl. Instruments Methods Phys. Res. Sect. B Beam Interact. with Mater. Atoms, vol.170, pp.161-170, 1980.

H. T. Lee, A. A. Haasz, J. W. Davis, R. G. Macaulay-newcombe, D. G. Whyte et al., Hydrogen and helium trapping in tungsten under simultaneous irradiations, Journal of Nuclear Materials, vol.363, issue.365, pp.363-365, 2007.
DOI : 10.1016/j.jnucmat.2007.01.111

M. T. Robinson, The reflection of low energy helium atoms from tungsten surfaces, Journal of Nuclear Materials, vol.103, pp.103-104, 1981.
DOI : 10.1016/0022-3115(82)90652-3

F. Sefta, K. D. Hammond, N. Juslin, and B. D. Wirth, Tungsten surface evolution by helium bubble nucleation, growth and rupture, Nuclear Fusion, vol.53, issue.7, 2013.
DOI : 10.1088/0029-5515/53/7/073015

M. Li, J. Cui, J. Wang, and Q. Hou, Effect of cumulative helium bombardments on the surface and structural properties of tungsten, Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, vol.352, pp.92-95, 2015.
DOI : 10.1016/j.nimb.2014.12.023

A. S. Soltan, R. Vassen, and P. Jung, Migration and immobilization of hydrogen and helium in gold and tungsten at low temperatures, Journal of Applied Physics, vol.56, issue.2, pp.793-797, 1991.
DOI : 10.1063/1.328590

J. Amano and D. N. Seidman, He atoms in perfect tungsten crystals, Journal of Applied Physics, vol.10, issue.14, pp.983-992, 1984.
DOI : 10.1103/PhysRevB.1.3966

F. Ferroni, X. Yi, K. Arakawa, S. P. Fitzgerald, P. D. Edmondson et al., High temperature annealing of ion irradiated tungsten, Acta Materialia, vol.90, 2015.
DOI : 10.1016/j.actamat.2015.01.067

D. R. Mason, X. Yi, M. A. Kirk, and S. L. Dudarev, Elastic trapping of dislocation loops in cascades in ion-irradiated tungsten foils, Journal of Physics: Condensed Matter, vol.26, issue.37, pp.10-1088
DOI : 10.1088/0953-8984/26/37/375701

I. De-broglie, C. E. Beck, W. Liu, and F. Hofmann, Temperature dependence of helium-implantation-induced lattice swelling in polycrystalline tungsten: X-ray micro-diffraction and Eigenstrain modelling, Scripta Materialia, vol.107, pp.96-99, 2015.
DOI : 10.1016/j.scriptamat.2015.05.029

G. Valles, M. Panizo-laiz, C. Gonzalez, I. Martin-bragado, R. Gonzalez-arrabal et al., Influence of grain boundaries on the radiation-induced defects and hydrogen in nanostructured and coarse-grained tungsten, Acta Materialia, vol.122, pp.277-286, 2017.
DOI : 10.1016/j.actamat.2016.10.007

P. M. Nambissan and P. Sen, Positron annihilation studies on alpha irradiated tungsten, Solid State Commun, pp.71-1165, 1989.
DOI : 10.1016/0038-1098(89)90733-3

H. T. Lee, A. A. Haasz, J. W. Davis, and R. G. Macaulay-newcombe, Hydrogen and helium trapping in tungsten under single and sequential irradiations, Journal of Nuclear Materials, vol.360, issue.2, pp.196-207, 2007.
DOI : 10.1016/j.jnucmat.2006.09.013