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A study on the macroscopic self-organized structure of high-power millimeter-wave breakdown plasma
https://repo.qst.go.jp/records/80618
https://repo.qst.go.jp/records/80618c6ab5dcc-c637-43f9-ad45-8294ec145030
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2020-10-01 | |||||
| タイトル | ||||||
| タイトル | A study on the macroscopic self-organized structure of high-power millimeter-wave breakdown plasma | |||||
| 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 |
Oda, Yasuhisa
× Oda, Yasuhisa× Takahashi, Masayuki× Ohnishi, Naofumi× Komurasaki, Kimiya× Sakamoto, Keishi× Imai, Tsuyoshi× Keishi, Sakamoto× Imai, Tsuyoshi |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Air breakdown plasma induced by a strong electromagnetic (EM) wave field with a millimeter wavelength has a self-formed filamentary structure. The scale of the breakdown plasma is much larger than the wavelength scale, and the power density is lower than the self-ignition threshold of atmospheric breakdown. We observed a breakdown plasma that consisted of small plasma spots, and their trajectory was identical to that of the filamentary structure observed macroscopically. The numerical analysis showed that the interaction of the ionization front, EM field, and neutral-gas heating determines the self-organized structure of the branching plasma. The plasma trajectory identified in the analysis was identical to that of the experimental results. This novel physical process was entirely different from the discrete filament formation observed in the breakdown plasma formed under a focused beam, and the physical process of the breakdown strongly depended on the scale and power density. | |||||
| 書誌情報 |
Plasma Sources Science and Technology 巻 29, 号 7, p. 075010, 発行日 2020-07 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0963-0252 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1088/1361-6595/ab9d67 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://iopscience.iop.org/article/10.1088/1361-6595/ab9d67 | |||||
