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Molecular dynamics simulations are performed to study the diffusion behavior of low-energy hydrogen atoms in bcc tungsten (001). The simulation results show that when the energy of vertically incident hydrogen atoms is in a range of 0–20.0 eV, their retention probability increases rapidly; in the whole incident energy range 0.5–50.0 eV, the reflection probability gradually drops, but still exceeds 60%. By varying the incident angle, the retention probability may increase in some energy ranges compared with those in the case of vertical incidence, but the reflection probability still dominates. In this paper, we also obtain the depth distribution of energy deposition of incident hydrogen and its isotopes. It is found that tritium deposits more energies in the surface region than hydrogen.
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Keywords:
- plasma facing materials /
- molecular dynamics method /
- tungsten /
- hydrogen
[1] Kaufmann M, Neu R 2007 Fusion Eng. Des. 82 521
[2] Paméla J, Matthews G F, Philipps V, Kamendje R 2007 J. Nucl. Mater. 363–365 1
[3] Doerner R P 2007 J. Nucl. Mater. 363–365 32
[4] Shu W M, Luo G N, Yamanishi T 2007 J. Nucl. Mater. 367–370 1463
[5] Shu W M, Wakai E, Yamanishi T 2007 Nucl. Fusion 47 201
[6] Ruan W, Xie A D, Yu X G, Wu D L 2011 Chin. Phys. B 20 043104
[7] Henriksson K O E, Nordlund K, Keinonen J, Vörtler K, Dreissigacker S 2006 Surface Sci. 600 3167
[8] Ge C C, Zhou Z J, Song S X, Du J, Zhong Z H 2007 J. Nucl. Mater. 363 1211
[9] Heinola K, Ahlgren T 2010 J. Appl. Phys. 107 11
[10] Liu Y L, Lu W, Gao A Y, Gui L J, Zhang Y 2012 Chin. Phys. B 21 126103
[11] Liu Y L, Zhou H B, Zhang Y 2011 J. Alloys Compd. 509 8277
[12] Stangeby P C 2000 The Plasma Boundary of Magnetic Fusion Devices (London: Nicki Dennis) p111
[13] Yang Z S, Xu Q, Hong R J, Li Q, Luo G N 2010 Fusion Eng. Des. 85 1517
[14] Li X C, Gao F, Lu G H 2009 Nucl. Instrum. Meth. B 267 3197
[15] Li S Y, Sun J Z, Zhang Z H, Liu S G, Wang D Z 2011 Acta Phys. Sin. 60 057901 (in Chinese) [李守阳, 孙继忠, 张治海, 刘升光, 王德真 2011 60 057901]
[16] Zhang Z H, Sun J Z, Liu S G, Wang D Z 2012 Acta Phys. Sin. 61 047901 (in Chinese) [张治海, 孙继忠, 刘升光, 王德真 2012 61 047901]
[17] Sun J Z, Zhang Z H, Liu S G, Wang D Z 2012 Acta Phys. Sin. 61 055201 (in Chinese) [孙继忠, 张治海, 刘升光, 王德真 2012 61 055201]
[18] Juslin N, Erhart P, Traskelin P, Nord J, Henriksson K O E, Nordlund K, Salonen E, Albe K 2005 J. Appl. Phys. 98 123520
[19] Sang C F, Sun J Z, Wang D Z 2011 J. Nucl. Mater. 415 204
[20] Brenner D W 1990 Phys. Rev. B 42 9458
[21] Zhou H B, Liu Y L, Jin S, Zhang Y, Luo G N, Lu G H 2010 Nucl. Fusion 50 025016
[22] Adelman S A, Doll J D 1976 J. Chem. Phys. 64 2375
[23] Heinola K, Ahlgren T 2010 J. Appl. Phys. 107 113531
[24] Frauenfelder R 1969 J. Vac. Sci. Technol. 6 388
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[1] Kaufmann M, Neu R 2007 Fusion Eng. Des. 82 521
[2] Paméla J, Matthews G F, Philipps V, Kamendje R 2007 J. Nucl. Mater. 363–365 1
[3] Doerner R P 2007 J. Nucl. Mater. 363–365 32
[4] Shu W M, Luo G N, Yamanishi T 2007 J. Nucl. Mater. 367–370 1463
[5] Shu W M, Wakai E, Yamanishi T 2007 Nucl. Fusion 47 201
[6] Ruan W, Xie A D, Yu X G, Wu D L 2011 Chin. Phys. B 20 043104
[7] Henriksson K O E, Nordlund K, Keinonen J, Vörtler K, Dreissigacker S 2006 Surface Sci. 600 3167
[8] Ge C C, Zhou Z J, Song S X, Du J, Zhong Z H 2007 J. Nucl. Mater. 363 1211
[9] Heinola K, Ahlgren T 2010 J. Appl. Phys. 107 11
[10] Liu Y L, Lu W, Gao A Y, Gui L J, Zhang Y 2012 Chin. Phys. B 21 126103
[11] Liu Y L, Zhou H B, Zhang Y 2011 J. Alloys Compd. 509 8277
[12] Stangeby P C 2000 The Plasma Boundary of Magnetic Fusion Devices (London: Nicki Dennis) p111
[13] Yang Z S, Xu Q, Hong R J, Li Q, Luo G N 2010 Fusion Eng. Des. 85 1517
[14] Li X C, Gao F, Lu G H 2009 Nucl. Instrum. Meth. B 267 3197
[15] Li S Y, Sun J Z, Zhang Z H, Liu S G, Wang D Z 2011 Acta Phys. Sin. 60 057901 (in Chinese) [李守阳, 孙继忠, 张治海, 刘升光, 王德真 2011 60 057901]
[16] Zhang Z H, Sun J Z, Liu S G, Wang D Z 2012 Acta Phys. Sin. 61 047901 (in Chinese) [张治海, 孙继忠, 刘升光, 王德真 2012 61 047901]
[17] Sun J Z, Zhang Z H, Liu S G, Wang D Z 2012 Acta Phys. Sin. 61 055201 (in Chinese) [孙继忠, 张治海, 刘升光, 王德真 2012 61 055201]
[18] Juslin N, Erhart P, Traskelin P, Nord J, Henriksson K O E, Nordlund K, Salonen E, Albe K 2005 J. Appl. Phys. 98 123520
[19] Sang C F, Sun J Z, Wang D Z 2011 J. Nucl. Mater. 415 204
[20] Brenner D W 1990 Phys. Rev. B 42 9458
[21] Zhou H B, Liu Y L, Jin S, Zhang Y, Luo G N, Lu G H 2010 Nucl. Fusion 50 025016
[22] Adelman S A, Doll J D 1976 J. Chem. Phys. 64 2375
[23] Heinola K, Ahlgren T 2010 J. Appl. Phys. 107 113531
[24] Frauenfelder R 1969 J. Vac. Sci. Technol. 6 388
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