Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5467411 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms | 2017 | 5 Pages |
Abstract
Samples of aluminium with purity 99.99%Â wt are irradiated with helium ion beam under ITER-like conditions using FALCON ion source. Aluminium is used as the surrogate material for plasma-material interaction studies. Typical parameters during steady-state exposure are the following: helium ion flux is 2-4Â ÃÂ 1022Â mâ2Â sâ1, heat flux is above 1Â MWÂ mâ2, average ion energy is of 2Â keV, and the ion fluence is well above 1027Â mâ2. Investigation of the surface morphology with SEM shows the formation of the cone-like structures, which develop with fluence increasing. Surface features suddenly disappear at the fluence of 1.06Â ÃÂ 1027Â mâ2 and then start to grow again. Further fluence increase with step-by-step surface diagnostics shows periodical character of the surface structures growth and degradation.
Related Topics
Physical Sciences and Engineering
Materials Science
Surfaces, Coatings and Films
Authors
O. Girka, O. Bizyukov, S. Bogatyrenko, I. Bizyukov,