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Two-dimensional electron density imaging of nanosecond-pulsed arc plasma in supercritical CO2
http://hdl.handle.net/10069/0002002567
http://hdl.handle.net/10069/0002002567922af1e3-fb02-4a39-a130-f400634affe7
| 名前 / ファイル | ライセンス | アクション |
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JPDAP58_255203.pdf (2 MB)
Download is available from 2026/6/17.
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| アイテムタイプ | 学術雑誌論文 / Journal Article(1) | |||||||||||
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| 公開日 | 2025-07-08 | |||||||||||
| タイトル | ||||||||||||
| タイトル | Two-dimensional electron density imaging of nanosecond-pulsed arc plasma in supercritical CO2 | |||||||||||
| 言語 | en | |||||||||||
| 言語 | ||||||||||||
| 言語 | eng | |||||||||||
| キーワード | ||||||||||||
| 言語 | en | |||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | Shack-Hartmann | |||||||||||
| キーワード | ||||||||||||
| 言語 | en | |||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | supercritical fluids | |||||||||||
| キーワード | ||||||||||||
| 言語 | en | |||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | arc plasma | |||||||||||
| キーワード | ||||||||||||
| 言語 | en | |||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | electron density | |||||||||||
| 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 | |||||||||||
| 著者 |
Furusato, Tomohiro
× Furusato, Tomohiro
× Sasaki, Mitsuru
× Inada, Yuki
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| 抄録 | ||||||||||||
| 内容記述タイプ | Abstract | |||||||||||
| 内容記述 | Until now, the plasma parameters of supercritical (SC) fluids have remained largely unknown. In this study, two-dimensional electron density distributions were observed using Shack–Hartmann sensors for nanosecond-pulsed arc plasma in SC-CO2 (7.38 MPa) and high-pressure CO2 (1.59 MPa) generated in a 1 mm needle-to-plane electrode. The maximum electron density in SC-CO2 reached 1026 m−3, which was several times higher than that under the high-pressure CO2 (1.59 MPa), and was several-order higher than that of a typical arc discharge under vacuum (1019−22 m−3) and the atmospheric-pressure gas phase (1022−24 m−3). We investigated difference of the electron density decay characteristics between the SC and high-pressure CO2. The electron density for the SC CO2 has a longer decaying time constant than the high-pressure CO2, because the arc discharge under the SC CO2 maintains the arc temperature due to radiative re-absorption and one-order-smaller diffusion coefficient of the SC medium in contact with the plasma than that of the high-pressure phase. The results provide a database for numerical simulations of the pulsed-arc discharge in SC CO2 in the future. | |||||||||||
| 言語 | en | |||||||||||
| 書誌情報 |
en : Journal of Physics D: Applied Physics 巻 58, 号 25, p. art. no. 255203, 発行日 2025-06-17 |
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| 出版者 | ||||||||||||
| 出版者 | IOP Publishing Ltd | |||||||||||
| 言語 | en | |||||||||||
| ISSN | ||||||||||||
| 収録物識別子タイプ | ISSN | |||||||||||
| 収録物識別子 | 0022-3727 | |||||||||||
| DOI | ||||||||||||
| 関連タイプ | isIdenticalTo | |||||||||||
| 識別子タイプ | DOI | |||||||||||
| 関連識別子 | 10.1088/1361-6463/ade1e7 | |||||||||||
| 権利 | ||||||||||||
| 権利情報 | © 2025 IOP Publishing Ltd. This is the Accepted Manuscript version of an article accepted for publication in Journal of Physics D: Applied Physics. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at 10.1088/1361-6463/ade1e7. | |||||||||||
| 言語 | en | |||||||||||
| 著者版フラグ | ||||||||||||
| 出版タイプ | AM | |||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||||||||
| 引用 | ||||||||||||
| 内容記述タイプ | Other | |||||||||||
| 内容記述 | Journal of Physics D: Applied Physics, 58(25), art. no. 255203; 2025 | |||||||||||
| 言語 | en | |||||||||||
