Microstructures and Deuterium-Retention Behavior of Tungsten Exposed to D+(He and/or Be) Mixture Plasmas
-
- Miyamoto Mitsutaka
- Department of Material Science, Shimane University
-
- Nishijima Daisuke
- Center for Energy Research, University of California at San Diego
-
- Baldwin Matthew J.
- Center for Energy Research, University of California at San Diego
-
- Doerner Russell P.
- Center for Energy Research, University of California at San Diego
-
- Ueda Yoshio
- Graduate School of Engineering, Osaka University
-
- Sagara Akio
- National Institute for Fusion Science
-
- Kurishita Hiroaki
- International Research Center for Nuclear Materials Science, Institute for Materials Research, Tohoku University
この論文をさがす
抄録
ITER-relevant mixed species (D, He, Be) plasma exposure experiments on microstructural changes and their impacts on D retention behavior in W are reviewed. It was observed that seeding of He into pure D plasma resulted in a significant reduction of D retention and suppression of surface blistering. TEM observations and ellipsometric measurements revealed that nano-sized high-density He bubbles were formed and percolated in the near surface region. Based on the experimental results, a mechanism to explain the reduced D retention was proposed, i.e., implanted D atoms can easily diffuse back to the surface through the percolating bubbles and escape from the surface during plasma exposure. Additional Be seeding to D+He mixture plasma suppressed this He seeding effect. Thus, it is considered that Be seeding has a more dominant influence than He seeding on microstructures and D retention in plasma-exposed W.
収録刊行物
-
- MATERIALS TRANSACTIONS
-
MATERIALS TRANSACTIONS 54 (4), 420-424, 2013
公益社団法人 日本金属学会
- Tweet
詳細情報 詳細情報について
-
- CRID
- 1390001204248864640
-
- NII論文ID
- 10031162803
-
- NII書誌ID
- AA1151294X
-
- COI
- 1:CAS:528:DC%2BC3sXoslyqtbc%3D
-
- ISSN
- 13475320
- 13459678
-
- NDL書誌ID
- 024375506
-
- 本文言語コード
- en
-
- データソース種別
-
- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
-
- 抄録ライセンスフラグ
- 使用不可
