Development of a large-bore plasma window with an indirectly heated hollow cathode
Journal of Applied Physics 134 巻
093302- 頁
2023-09-01 発行
アクセス数 : 14 件
ダウンロード数 : 8 件
今月のアクセス数 : 14 件
今月のダウンロード数 : 8 件
この文献の参照には次のURLをご利用ください : https://ir.lib.hiroshima-u.ac.jp/00056154
| ファイル情報(添付) | |
| タイトル ( eng ) |
Development of a large-bore plasma window with an indirectly heated hollow cathode
|
| 作成者 |
Sumino M.
Sunada Y.
Yanagi O.
Okuda K.
Kono J.
Saito A.
Mori D.
Tomita K.
Pan Y.
Tamura N.
Suzuki C.
Okuno H.
Guo F.
Namba S.
|
| 収録物名 |
Journal of Applied Physics
|
| 巻 | 134 |
| 開始ページ | 093302 |
| 抄録 |
For plasma window (PW) applications, we developed the cascade arc discharge device with an indirectly heated hollow cathode. The 8-mm channel diameter hollow cathode made of a lanthanum hexaboride (LaB ) was heated by the C/C composite heater surrounding the cathode to increase the thermionic electron emission. The PW developed successfully separated 2.4 kPa and 16 Pa, and the pressure separation capability was sustained for over 1 h. H- Stark broadening measurement and the Thomson scattering measurement showed that the electron density and temperature inside the channel reached 1019-1020m-3 and 2.0 eV, respectively. The power balance analysis on the electron thermal energy revealed that the neutral density and temperature inside the channel were as high as 1023 m-3 and 4000 K, respectively. The relation between the pressure separation capability and the neutral temperature showed that the flow inside the channel of the PW had the molecular flow feature. The SEM-EDX analysis on the LaB cathode showed that boron diffused to the molybdenum (Mo) shaft during plasma operation, which supported the LaB cathode. Mo shaft became brittle after more than 50 h of operation, exhibiting the necessity of buffer material between the LaB cathode and Mo shaft for long-duration operation.
|
| 内容記述 |
This research was supported by JSPS KAKENHI under Grant No. JP20H00141, O. S. G. Fund, Furukawa Research Fund, and NIFS Collaboration Research Program under Grant Nos. NIFS NIFS22KIIH003, NIFS22KIIH011, and NIFS23KIIH016.
|
| 言語 |
英語
|
| 資源タイプ | 学術雑誌論文 |
| 出版者 |
AIP Publishing
|
| 発行日 | 2023-09-01 |
| 権利情報 |
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Yamasaki, K. et al., Development of a large-bore plasma window with an indirectly heated hollow cathode, Journal of Applied Physics, 134, 093302 (2023) and may be found at https://doi.org/10.1063/5.0166798.
This is not the published version. Please cite only the published version.
この論文は出版社版ではありません。引用の際には出版社版をご確認、ご利用ください。
|
| 出版タイプ | Accepted Manuscript（出版雑誌の一論文として受付されたもの。内容とレイアウトは出版社の投稿様式に沿ったもの） |
| アクセス権 | オープンアクセス |
| 収録物識別子 |
[DOI] https://doi.org/10.1063/5.0166798
～の異版である
|
| 助成機関名 |
日本学術振興会
Japan Society for the Promotion of Science
|
| 助成機関識別子 |
[Crossref Funder] https://doi.org/10.13039/501100001691
|
| 研究課題名 |
真空工学に革命的技術をもたらすプラズマウィンドウの開発と量子ビーム科学への応用
Development of plasma window for vacuum interface and its application to quantum beam science
|
| 研究課題番号 |
20H00141
|
