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Negative Ion Extraction Characteristics of a Large Negative Ion Source with Double-Magnetic Filter Configuration
http://hdl.handle.net/10655/2519
http://hdl.handle.net/10655/2519c7b6a49f-5bf4-4e5e-8b70-cae8b20c5a9b
| Item type | 研究報告書 / Research Paper(1) | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2010-02-05 | |||||||||||||||||
| タイトル | ||||||||||||||||||
| タイトル | Negative Ion Extraction Characteristics of a Large Negative Ion Source with Double-Magnetic Filter Configuration | |||||||||||||||||
| 言語 | en | |||||||||||||||||
| 言語 | ||||||||||||||||||
| 言語 | eng | |||||||||||||||||
| キーワード | ||||||||||||||||||
| 言語 | en | |||||||||||||||||
| 主題Scheme | Other | |||||||||||||||||
| 主題 | negative ion source | |||||||||||||||||
| キーワード | ||||||||||||||||||
| 言語 | en | |||||||||||||||||
| 主題Scheme | Other | |||||||||||||||||
| 主題 | negative-ion-based NBI | |||||||||||||||||
| キーワード | ||||||||||||||||||
| 言語 | en | |||||||||||||||||
| 主題Scheme | Other | |||||||||||||||||
| 主題 | volume production | |||||||||||||||||
| キーワード | ||||||||||||||||||
| 言語 | en | |||||||||||||||||
| 主題Scheme | Other | |||||||||||||||||
| 主題 | magnetic filter | |||||||||||||||||
| キーワード | ||||||||||||||||||
| 言語 | en | |||||||||||||||||
| 主題Scheme | Other | |||||||||||||||||
| 主題 | double-magnetic filter configuration | |||||||||||||||||
| 資源タイプ | ||||||||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_18ws | |||||||||||||||||
| 資源タイプ | research report | |||||||||||||||||
| 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 |
"Takeiri, Y.
× "Takeiri, Y.
× Ando, A.
× Kaneko, O.
× Oka, Y.
× KURODA, T.
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| 抄録 | ||||||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||||||
| 内容記述 | "A multi-ampere hydrogen negative ion source with a large extraction area of 25 cm x 25 cm has been developed. This negative ion source is a volume-production-type bucket ion source which is operated with double-magnetic filter configuration. In this configuration, the fast electrons, which produce the vibrationally excited molecules, are trapped near the chamber wall by the cusp field, which is the first magnetic filter. In the central region of the arc chamber, there exist only the thermal electrons with low temperature. As a result, the negative ions are produced in the central region by dissociative attachment. A rod magnetic filter in front of the plasma grid, which is the second magnetic filter, is utilized for reducing the population of the electrons in the vicinity of the plasma grid, which are extracted together with the negative ions. By this structure the extracted electron current can be controlled independently of the H^- ion current. So far, a 1.4A of H^- ion current has been obtained with the energy of 34 keV. Negative ion extraction characteristics of this ion source, such as the arc power dependence and the gas pressure dependence, are presented." | |||||||||||||||||
| 書誌情報 |
en : Research Report NIFS-Series 発行日 1992-05-01 |
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| 報告書番号 | ||||||||||||||||||
| NIFS-151 | ||||||||||||||||||
| ISSN | ||||||||||||||||||
| 収録物識別子タイプ | ISSN | |||||||||||||||||
| 収録物識別子 | 0915-633X | |||||||||||||||||
