Technical Meeting on the Effects of Hydrogen Supersaturation and Defect Stabilization in Nuclear Fusion Reactor Materials

The Technical Meeting on the Effects of Hydrogen Supersaturation and Defect Stabilization in Nuclear Fusion Reactor Materials is a subtask related to conclusions drawn from the 5th International Workshop on Models and Data for Plasma-Material Interaction in Fusion Devices (MoD-PMI 2021). The Scientific Secretary is Kalle HEINOLA.

The meeting discussed and reviewed current understanding on the physical processes related to effects and formation of:

  • hydrogen (H/D/T) supersaturated layers in fusion reactor wall materials at sub-threshold displacement energies and the effect of surface roughness to the supersaturated layer formation; and
  • vacancy-type defect stabilization by hydrogen (H/D/T) in fusion reactor materials under neutron and heavy ion bombardment at energies above displacement threshold;

and made conclusions and recommendations on:

  • the significance of these effects to material behaviour under fusion conditions
  • data needs for filling the knowledge gaps, e.g. define defects for systematic DFT/MD calculations
  • future activities with multi-scale calculations.
Organizing Committee
  • Yves Ferro (Aix-Marseille Université, France)
  • Kalle Heinola (International Atomic Energy Agency)
  • Etienne Hodille (Commissariat à l’énergie atomique et aux énergies alternatives (CEA) Cadarache, France)
  • Julien Denis (Aix-Marseille Université, France)
  • Yosvany Silva Solís (Aix-Marseille Université, France)

More information for meeting participants is available at the IAEA's Indico web page (login required).

Agenda

Monday, 11 April 2022

08:45 – 09:00Meeting opening and welcome
09:00 – 09:30Sabina MARKELJ (Jožef Stefan Institute, Slovenia)
The influence of D presence on defect creation during displacement damaging of tungsten
[abstract (pdf: 38.0 KB)]
09:30 – 10:30Discussion
10:30 – 10:50Coffee Break
10:50 – 11:20Liang GAO (Forschungszentrum Jülich (FZJ), Germany)
Hydrogen Supersaturated Surface Layer via Plasma Exposure with Sub-displacement Damage Ion Energy
[abstract (pdf: 36.7 KB)]
11:20 – 12:30Discussion
12:30 – 14:00Lunch
14:00 – 14:15Daisuke NISHIJIMA (Center for Energy Research, UCSD, United States of America)
Parameter dependence of dynamic D retention in W
[abstract (pdf: 40.1 KB)]
14:15 – 14:30Michael SIMMONDS (Center for Energy Research, UCSD, United States of America)
Possible defect stabilization due to simultaneous D plasma exposure during annealing in self-ion damaged W
[abstract (pdf: 35.7 KB)]
14:30 – 15:30Discussion
15:30 – 15:50Coffee Break
15:50 – 17:00Discussion

Tuesday, 12 April 2022

09:00 – 09:30Jun SONG (McGill University, Canada)
Multiscale Modelling of Hydrogen Trapping and Clustering at Nanovoids and Dislocations in BCC Metals
[abstract (pdf: 30.7 KB)] [presentation (pdf: 13.4 MB)]
09:30 – 10:30Discussion
10:30 – 10:50Coffee Break
10:50 – 11:20Yves FERRO (Physique des Interactions Ioniques et Moléculaires (PIIM), Aix-Marseille Université (AMU), France)
Thermodynamic Models based on DFT data for Hydrogen Supersaturation and Defects Stabilization
[abstract (pdf: 34.2 KB)] [presentation (pdf: 3.6 MB)]
11:20 – 12:30Discussion
12:30 – 14:00Lunch
14:00 – 14:30Udo VON TOUSSAINT (Max Planck Institute for Plasma Physics, Garching, Germany)
Molecular Dynamics and Kinetic Monte Carlo Simulations on Defect Formation in Tungsten with and without Hydrogen
[abstract (pdf: 34.5 KB)] [presentation (pdf: 3.0 MB)]
14:30 – 15:30Discussion
15:30 – 15:50Coffee Break
15:50 – 17:00Discussion; Meeting adjourn

Participants

20 participants from 6 countries.

Yves FERRO Physique des Interactions Ioniques et Moléculaires (PIIM), Aix-Marseille Université (AMU), France
Liang GAO Forschungszentrum Jülich (FZJ), Germany
Sabina MARKELJ Jožef Stefan Institute, Slovenia
Daisuke NISHIJIMA Center for Energy Research, UCSD, United States of America
Michael SIMMONDS Center for Energy Research, UCSD, United States of America
Jun SONG McGill University, Canada
Udo VON TOUSSAINT Max Planck Institute for Plasma Physics, Garching, Germany
Kalle HEINOLA IAEA
Etienne A. HODILLE Centre d'Etudes Nucleaires de Cadarache, Association EURATOM-CEA, France
Yosvany SILVA SOLÍS Physique des Interactions Ioniques et Moléculaires (PIIM), Aix-Marseille Université (AMU), France
Tom WAUTERS ITER, France
Charlotte BECQUART Laboratoire de Métallurgie Physique et Génie des Matériaux Université des Sciences et Technologies de Lille (USTL), France
Christian LINSMEIER Forschungszentrum Jülich (FZJ), Germany
Dmitry MATVEEV Forschungszentrum Jülich (FZJ), Germany
Klaus SCHMID Max Planck Institute for Plasma Physics, Garching, Germany
Thomas SCHWARZ-SELINGER Max Planck Institute for Plasma Physics, Garching, Germany
Mikhail ZIBROV Max Planck Institute for Plasma Physics, Garching, Germany
Duc NGUYEN-MANH Culham Centre for Fusion Energy, United Kingdom
Daniel MASON Culham Centre for Fusion Energy, United Kingdom
Julien DENIS Physique des Interactions Ioniques et Moléculaires (PIIM), Aix-Marseille Université (AMU), France

Presentations

Yves FERRO (Physique des Interactions Ioniques et Moléculaires (PIIM), Aix-Marseille Université (AMU), France)
Thermodynamic Models based on DFT data for Hydrogen Supersaturation and Defects Stabilization
[abstract (pdf: 34.2 KB)] [presentation (pdf: 3.6 MB)]

Liang GAO (Forschungszentrum Jülich (FZJ), Germany)
Hydrogen Supersaturated Surface Layer via Plasma Exposure with Sub-displacement Damage Ion Energy
[abstract (pdf: 36.7 KB)]

Sabina MARKELJ (Jožef Stefan Institute, Slovenia)
The influence of D presence on defect creation during displacement damaging of tungsten
[abstract (pdf: 38.0 KB)]

Daisuke NISHIJIMA (Center for Energy Research, UCSD, United States of America)
Parameter dependence of dynamic D retention in W
[abstract (pdf: 40.1 KB)]

Michael SIMMONDS (Center for Energy Research, UCSD, United States of America)
Possible defect stabilization due to simultaneous D plasma exposure during annealing in self-ion damaged W
[abstract (pdf: 35.7 KB)]

Jun SONG (McGill University, Canada)
Multiscale Modelling of Hydrogen Trapping and Clustering at Nanovoids and Dislocations in BCC Metals
[abstract (pdf: 30.7 KB)] [presentation (pdf: 13.4 MB)]

Udo VON TOUSSAINT (Max Planck Institute for Plasma Physics, Garching, Germany)
Molecular Dynamics and Kinetic Monte Carlo Simulations on Defect Formation in Tungsten with and without Hydrogen
[abstract (pdf: 34.5 KB)] [presentation (pdf: 3.0 MB)]