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Tungsten fuzz: Deposition effects and influence to fusion devices

Nuclear materials and energy, 2020-12, Vol.25, p.100828, Article 100828 [Tạp chí có phản biện]

2020 The Authors ;ISSN: 2352-1791 ;EISSN: 2352-1791 ;DOI: 10.1016/j.nme.2020.100828

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  • Nhan đề:
    Tungsten fuzz: Deposition effects and influence to fusion devices
  • Tác giả: Kajita, Shin ; Yoshida, Naoaki ; Ohno, Noriyasu
  • Chủ đề: Arcing ; Deposition ; Helium ; Nanostructure ; Nuclear fusion ; Tungsten
  • Là 1 phần của: Nuclear materials and energy, 2020-12, Vol.25, p.100828, Article 100828
  • Mô tả: Helium (He) plasma irradiation to tungsten leads to formation of He bubbles and fiberform nanostructures called fuzz on the surface. Although the fuzz growth condition and growth rate have been well investigated, deposition of W together with He ions can change the He effect significantly. For example, the deposition leads to large-scale structures such as nano-tendril bundles and mm-thick large-scale fiberform nanostructures. In this review, current understanding of deposition effects on He irradiation are summarized, and the influence to fusion devices is discussed mainly from the view point of arcing. •Fiberform nanostructures called fuzz are known to form on the surface by helium (He) plasma irradiation.•The He effect can alter significantly with deposition of W particles.•Large-scale nanostructures (0.1–1 mm) can form on the surface by He effects with deposition.•Dust release can be seen by arcing initiated on the surfaces with the large-scale nanostructures.
  • Nơi xuất bản: Elsevier Ltd
  • Ngôn ngữ: English
  • Số nhận dạng: ISSN: 2352-1791
    EISSN: 2352-1791
    DOI: 10.1016/j.nme.2020.100828
  • Nguồn: Directory of Open Access Journals (DOAJ)
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