Journal
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
Volume 440, Issue -, Pages 82-87Publisher
ELSEVIER
DOI: 10.1016/j.nimb.2018.12.010
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Funding
- Ministry of Education and Science of Ukraine [0115U000469, 0117U004855, 0117U004865, 0117U004869, 01180002049]
- State Fund for Fundamental Research of Ukraine [F76/84-2018]
- Targeted Program of NAS of Ukraine on Plasma Physics
- RD Program of Plasma Convergence AMP
- Fundamental Research through the National Fusion Research Institute of Korea (NFRI)
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Tungsten samples were exposed to sequential steady-state (particle flux of 10(22)m(-2)s(-1), heat flux of 1.7 MW/m(2)) and pulsed (surface heat load of 0.45 MJ/m(2), pulse duration of 0.25 ms) hydrogen plasmas. Several steps of the steady-state irradiation and pulsed loading were carried out. The samples were studied between the stages of the irradiation with SEM and XRD methods. It has been found that crack network and blisters developed on the surface under irradiation strongly depend on the initial structure of tungsten samples.
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