WEKO3
アイテム
Evaluation of 3D printed buckyball-shaped cathodes of titanium and stainless-steel for IEC fusion system
https://repo.qst.go.jp/records/81677
https://repo.qst.go.jp/records/8167744e78f6e-aba7-4ad4-aad6-2fbe86fb0888
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2021-01-15 | |||||
| タイトル | ||||||
| タイトル | Evaluation of 3D printed buckyball-shaped cathodes of titanium and stainless-steel for IEC fusion system | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Bakr, Mahmoud
× Bakr, Mahmoud× Jan-Philipp, Wulfkühler× Mukai, Keisuke× Masuda, Kai× Tajmar, Martin× Konishi, Satoshi× Kai, Masuda |
|||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | An inertial electrostatic confinement (IEC) fusion device accelerates ions, such as deuterium (D) or tritium (T), to produce nuclear fusion and generate neutrons. The IEC’s straightforward configuration consists of a concentric spherical transparent cathode at a negative bias in a grounded spherical anode center. The effects of cathode properties on the neutron production rate (NPR) remains, to date, inadequately studied. This study aims to determine the impact of cathode material on NPR by investigating fusion reactions on the cathode surface. Two buckyball-shaped cathodes made of stainless steel (SS) and titanium (Ti), both of 5 cm diameter, fabricated using selective laser melting and a 3D printer, are used for this investigation. A SS spherical chamber of 25 cm inner diameter is used as an anode in this experiment. A performance evaluation of surface fusion reaction in the IEC using SS and Ti grids is conducted by scanning the NPR as a function of the applied voltage and grid currents at different gas pressures. So far, IEC with Ti and SS cathodes achieves NPRs of 2.32 and 1.41×107 n/s, respectively, at 5.6 kW (70 kV, 80 mA). The normalized NPR (NPR/I-cathode) from IEC using SS and Ti cathode are compared. The results demonstrate that fusion reactions occur on the cathode surface, while the fusion reaction ratio increases with the applied voltage. The measured NPR/I-cathode for IEC with Ti cathode is more elevated than the SS cathode with 1.36 to 1.64 times for 20 to 70 kV range. Moreover, fusion on the cathode surface enhances the total NPR from the IEC with Ti cathode significantly compared to IEC with SS cathode under the same conditions. The Ti’s considerable ability to accumulate D ions and molecules compared with that of SS explains the difference of measured NPR results. | |||||
| 書誌情報 |
Physics of Plasmas 巻 28, p. 012706, 発行日 2021-01 |
|||||
| 出版者 | ||||||
| 出版者 | The American Institute of Physics | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 1070-664X | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1063/5.0033342 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://aip.scitation.org/doi/10.1063/5.0033342 | |||||
