WEKO3
アイテム
Application of Thomson scattering system toward direct measurement of extraction surface of the negative ion beam
https://repo.qst.go.jp/records/86084
https://repo.qst.go.jp/records/860849872604a-7bc8-4f58-84e3-ddf7d78674b6
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2022-04-07 | |||||
| タイトル | ||||||
| タイトル | Application of Thomson scattering system toward direct measurement of extraction surface of the negative ion beam | |||||
| 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 |
Junichi, Hiratsuka
× Junichi, Hiratsuka× Kentaro, Tomita× Mieko, Kashiwagi× Atsushi, Kojima× mae quinones Saquilayan, Glynnis× Kaihori, Takeshi× Masahiro, Ichikawa× Masashi, Kisaki× Hiroyuki, Tobari× Kazuhiro, Watanabe× Junichi, Hiratsuka× Mieko, Kashiwagi× Atsushi, Kojima× mae quinones Saquilayan, Glynnis× Kaihori, Takeshi× Masahiro, Ichikawa× Masashi, Kisaki× Hiroyuki, Tobari× Kazuhiro, Watanabe |
|||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | As a challenge to measure the extraction surface of the negative ion beam, a laser Thomson scattering system with high spatial resolution was applied to a weakly ionized plasma in a negative ion source for the first time. The first target was to measure electron density around extraction region because shape of the extraction surface can be estimated by electron spatial profile. However, stray light by injected laser, filament and plasma was too intense compared to signal from the low density region. To solve this, a triple grating spectroscopy and a multilayer black screen were introduced, and the laser spot size was minimized to reduce slit sizes of the spectroscopy. As a result, electron density was successfully measured accurately in low density region. From an error estimation, measurement of electron density 3×1016 m-3 with spatial resolution of 0.5 mm at extraction region can be realized with accumulation of signals from multiple laser shots. This system can contribute to the understanding of the mechanism of formation of the extraction surface, which is a long-term issue in the negative ion source. | |||||
| 書誌情報 |
Journal of Physics: Conference Series 巻 2244, p. 012047-5, 発行日 2022-04 |
|||||
| 出版者 | ||||||
| 出版者 | Institute of Physics | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 1742-6596 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1088/1742-6596/2244/1/012047 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://iopscience.iop.org/article/10.1088/1742-6596/2244/1/012047 | |||||
