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Impact of seeded plasma impurities on D retention in RAFM steels
The effect of He seeding (He+ ion fraction, cHe+, of ~5 and ~10%) to D plasma (ion flux ~ 1.5–2 × 1021 m−2s−1, sample temperature ~ 373 K, and incident ion energy ~ 100 eV) on D retention in various reduced-activation ferritic/martensitic (RAFM) steels is investigated in the PISCES-A linear plasma device. The D retention, quantified with thermal desorption spectroscopy, is found to decrease with increasing cHe+. The He seeding leads to the formation of cone structures on the surface. Inside and below the cones, high-density He bubbles are observed with transmission electron microscopy, which are thought to be, at least partly, responsible for the reduction of D retention. The D retention is also reduced with Ar seeding, while N2 seeding results in a significant increase in the D retention.
Impact of seeded plasma impurities on D retention in RAFM steels
The effect of He seeding (He+ ion fraction, cHe+, of ~5 and ~10%) to D plasma (ion flux ~ 1.5–2 × 1021 m−2s−1, sample temperature ~ 373 K, and incident ion energy ~ 100 eV) on D retention in various reduced-activation ferritic/martensitic (RAFM) steels is investigated in the PISCES-A linear plasma device. The D retention, quantified with thermal desorption spectroscopy, is found to decrease with increasing cHe+. The He seeding leads to the formation of cone structures on the surface. Inside and below the cones, high-density He bubbles are observed with transmission electron microscopy, which are thought to be, at least partly, responsible for the reduction of D retention. The D retention is also reduced with Ar seeding, while N2 seeding results in a significant increase in the D retention.
Impact of seeded plasma impurities on D retention in RAFM steels
D. Nishijima (author) / M. Tokitani (author) / M.I. Patino (author) / D. Nagata (author) / A.V. Golubeva (author) / R.P. Doerner (author)
2020
Article (Journal)
Electronic Resource
Unknown
Metadata by DOAJ is licensed under CC BY-SA 1.0
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