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 meeting will discuss and review 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 will make 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.

The meeting material and presentations will be managed through IAEA's Indico web page.