Nucleation and growth of hydrogen bubbles on dislocations in tungsten under high flux low energy plasma exposure

Research output: Contribution to journalArticlepeer-review

Standard

Nucleation and growth of hydrogen bubbles on dislocations in tungsten under high flux low energy plasma exposure. / Grigorev, Petr; Terentyev, Dmitry; Dubinko, Vladimir I.; Bonny, Giovanni; Van Oost, Guido; Noterdaeme, J.M.; Zhurkin, Evgeni E.

In: Nuclear Instruments and Methods in Physics Research Section B, Vol. 352, 01.06.2015, p. 96-99.

Research output: Contribution to journalArticlepeer-review

Harvard

Grigorev, P, Terentyev, D, Dubinko, VI, Bonny, G, Van Oost, G, Noterdaeme, JM & Zhurkin, EE 2015, 'Nucleation and growth of hydrogen bubbles on dislocations in tungsten under high flux low energy plasma exposure', Nuclear Instruments and Methods in Physics Research Section B, vol. 352, pp. 96-99. https://doi.org/10.1016/j.nimb.2014.11.103

APA

Grigorev, P., Terentyev, D., Dubinko, V. I., Bonny, G., Van Oost, G., Noterdaeme, J. M., & Zhurkin, E. E. (2015). Nucleation and growth of hydrogen bubbles on dislocations in tungsten under high flux low energy plasma exposure. Nuclear Instruments and Methods in Physics Research Section B, 352, 96-99. https://doi.org/10.1016/j.nimb.2014.11.103

Vancouver

Grigorev P, Terentyev D, Dubinko VI, Bonny G, Van Oost G, Noterdaeme JM et al. Nucleation and growth of hydrogen bubbles on dislocations in tungsten under high flux low energy plasma exposure. Nuclear Instruments and Methods in Physics Research Section B. 2015 Jun 1;352:96-99. https://doi.org/10.1016/j.nimb.2014.11.103

Author

Grigorev, Petr ; Terentyev, Dmitry ; Dubinko, Vladimir I. ; Bonny, Giovanni ; Van Oost, Guido ; Noterdaeme, J.M. ; Zhurkin, Evgeni E. / Nucleation and growth of hydrogen bubbles on dislocations in tungsten under high flux low energy plasma exposure. In: Nuclear Instruments and Methods in Physics Research Section B. 2015 ; Vol. 352. pp. 96-99.

Bibtex - Download

@article{15bea146aeb1444ba4b61e831e41f0de,
title = "Nucleation and growth of hydrogen bubbles on dislocations in tungsten under high flux low energy plasma exposure",
abstract = "A new mechanism for the nucleation and growth of hydrogen (H) bubbles on dislocations under plasma exposure of tungsten was recently proposed on the basis of direct ab initio calculations. Density functional theory calculations demonstrated that H atoms are strongly bound to a screw dislocation core and exhibit fast one-dimensional migration along its line. Once the number of hydrogen atoms trapped on a dislocation segment exceeds eight, the emission of a jog occurs thereby converting a pure HN cluster into a HN+1-jog configuration. On the basis of these results a kinetic model was formulated to evaluate the conditions (i.e., range of temperature and flux exposure) for the transformation of pure H clusters into supercritical hydrogen–vacancy clusters attached to the dislocation line. In this work, a parametric study employing the kinetic nucleation model was performed to derive the hydrogen bubble formation energy function that offers the best agreement with available experimental results. The obtained results allow one to rationalize the depth and temperature dependence of the experimentally observed hydrogen deposition after high flux low energy plasma exposure for ITER relevant conditions.",
keywords = "Hydrogen retention, Tungsten, Bubble",
author = "Petr Grigorev and Dmitry Terentyev and Dubinko, {Vladimir I.} and Giovanni Bonny and {Van Oost}, Guido and J.M. Noterdaeme and Zhurkin, {Evgeni E.}",
note = "Score=10",
year = "2015",
month = jun,
day = "1",
doi = "10.1016/j.nimb.2014.11.103",
language = "English",
volume = "352",
pages = "96--99",
journal = "Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms",
issn = "0168-583X",
publisher = "Elsevier",

}

RIS - Download

TY - JOUR

T1 - Nucleation and growth of hydrogen bubbles on dislocations in tungsten under high flux low energy plasma exposure

AU - Grigorev, Petr

AU - Terentyev, Dmitry

AU - Dubinko, Vladimir I.

AU - Bonny, Giovanni

AU - Van Oost, Guido

AU - Noterdaeme, J.M.

AU - Zhurkin, Evgeni E.

N1 - Score=10

PY - 2015/6/1

Y1 - 2015/6/1

N2 - A new mechanism for the nucleation and growth of hydrogen (H) bubbles on dislocations under plasma exposure of tungsten was recently proposed on the basis of direct ab initio calculations. Density functional theory calculations demonstrated that H atoms are strongly bound to a screw dislocation core and exhibit fast one-dimensional migration along its line. Once the number of hydrogen atoms trapped on a dislocation segment exceeds eight, the emission of a jog occurs thereby converting a pure HN cluster into a HN+1-jog configuration. On the basis of these results a kinetic model was formulated to evaluate the conditions (i.e., range of temperature and flux exposure) for the transformation of pure H clusters into supercritical hydrogen–vacancy clusters attached to the dislocation line. In this work, a parametric study employing the kinetic nucleation model was performed to derive the hydrogen bubble formation energy function that offers the best agreement with available experimental results. The obtained results allow one to rationalize the depth and temperature dependence of the experimentally observed hydrogen deposition after high flux low energy plasma exposure for ITER relevant conditions.

AB - A new mechanism for the nucleation and growth of hydrogen (H) bubbles on dislocations under plasma exposure of tungsten was recently proposed on the basis of direct ab initio calculations. Density functional theory calculations demonstrated that H atoms are strongly bound to a screw dislocation core and exhibit fast one-dimensional migration along its line. Once the number of hydrogen atoms trapped on a dislocation segment exceeds eight, the emission of a jog occurs thereby converting a pure HN cluster into a HN+1-jog configuration. On the basis of these results a kinetic model was formulated to evaluate the conditions (i.e., range of temperature and flux exposure) for the transformation of pure H clusters into supercritical hydrogen–vacancy clusters attached to the dislocation line. In this work, a parametric study employing the kinetic nucleation model was performed to derive the hydrogen bubble formation energy function that offers the best agreement with available experimental results. The obtained results allow one to rationalize the depth and temperature dependence of the experimentally observed hydrogen deposition after high flux low energy plasma exposure for ITER relevant conditions.

KW - Hydrogen retention

KW - Tungsten

KW - Bubble

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/26871176

U2 - 10.1016/j.nimb.2014.11.103

DO - 10.1016/j.nimb.2014.11.103

M3 - Article

VL - 352

SP - 96

EP - 99

JO - Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms

JF - Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms

SN - 0168-583X

ER -

ID: 3368203