Experimental study on the effect of cesium injection on negative ion yield of high power negative ion source
BackgroundCesium injection can significantly reduce the work function of plasma grid surface of the radio frequency (RF) negative ion source, which is an effective way to promote the surface generation and improve the yield of H- ions.PurposeThis study aims to find the impact of the temperature of p...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | zho |
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Science Press
2021-01-01
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| Series: | He jishu |
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| Online Access: | http://www.hjs.sinap.ac.cn/thesisDetails#10.11889/j.0253-3219.2021.hjs.44.010602&lang=zh |
| _version_ | 1811170366218829824 |
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| author | WANG Haoming HU Chundong CHEN Shiyong XU Yongjian PAN Junjun WEI Jianglong LIU Wei CUI Qinglong XIE Yahong XIE Yuanlai LIANG Lizhen |
| author_facet | WANG Haoming HU Chundong CHEN Shiyong XU Yongjian PAN Junjun WEI Jianglong LIU Wei CUI Qinglong XIE Yahong XIE Yuanlai LIANG Lizhen |
| author_sort | WANG Haoming |
| collection | DOAJ |
| description | BackgroundCesium injection can significantly reduce the work function of plasma grid surface of the radio frequency (RF) negative ion source, which is an effective way to promote the surface generation and improve the yield of H- ions.PurposeThis study aims to find the impact of the temperature of plasma grid (PG) and the cesium injection velocity on the yield of H- ions under the condition of cesium injection.MethodsBased on the experimental platform of high power radio frequency negative ion source, the mechanism of H- ions surface generation and cesium injection were the theoretical basis, the current of H- ions, electron current and the relative strength of cesium characteristic spectral line were taken as numerical benchmarks. The effects of PG plate temperature and cesium injection rate on the yield of RF negative H- ion source were investigated by emperiments.Results & ConclusionsUnder current experimental conditions, cesium injection has the best effect when the PG temperature is in the range of 180~200 ℃. The H- ions conversion rate reaches dynamic equilibrium after about 162 min when the temperature of cesium injection is 250 ℃/270 ℃. |
| first_indexed | 2024-04-10T16:55:40Z |
| format | Article |
| id | doaj.art-cd52609c797544368976c445945502b5 |
| institution | Directory Open Access Journal |
| issn | 0253-3219 |
| language | zho |
| last_indexed | 2024-04-10T16:55:40Z |
| publishDate | 2021-01-01 |
| publisher | Science Press |
| record_format | Article |
| series | He jishu |
| spelling | doaj.art-cd52609c797544368976c445945502b52023-02-07T07:46:10ZzhoScience PressHe jishu0253-32192021-01-0144101060201060210.11889/j.0253-3219.2021.hjs.44.0106020253-3219（2021）01-0089-06Experimental study on the effect of cesium injection on negative ion yield of high power negative ion sourceWANG Haoming0HU Chundong1CHEN Shiyong2XU Yongjian3PAN Junjun4WEI Jianglong5LIU Wei6CUI Qinglong7XIE Yahong8XIE Yuanlai9LIANG Lizhen10Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, ChinaInstitute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, ChinaInstitute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, ChinaInstitute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, ChinaInstitute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, ChinaInstitute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, ChinaInstitute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, ChinaInstitute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, ChinaInstitute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, ChinaInstitute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, ChinaInstitute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, ChinaBackgroundCesium injection can significantly reduce the work function of plasma grid surface of the radio frequency (RF) negative ion source, which is an effective way to promote the surface generation and improve the yield of H- ions.PurposeThis study aims to find the impact of the temperature of plasma grid (PG) and the cesium injection velocity on the yield of H- ions under the condition of cesium injection.MethodsBased on the experimental platform of high power radio frequency negative ion source, the mechanism of H- ions surface generation and cesium injection were the theoretical basis, the current of H- ions, electron current and the relative strength of cesium characteristic spectral line were taken as numerical benchmarks. The effects of PG plate temperature and cesium injection rate on the yield of RF negative H- ion source were investigated by emperiments.Results & ConclusionsUnder current experimental conditions, cesium injection has the best effect when the PG temperature is in the range of 180~200 ℃. The H- ions conversion rate reaches dynamic equilibrium after about 162 min when the temperature of cesium injection is 250 ℃/270 ℃.http://www.hjs.sinap.ac.cn/thesisDetails#10.11889/j.0253-3219.2021.hjs.44.010602&lang=zhradio frequency negative ion sourcesurface generationcesium injectionthermostatic control |
| spellingShingle | WANG Haoming HU Chundong CHEN Shiyong XU Yongjian PAN Junjun WEI Jianglong LIU Wei CUI Qinglong XIE Yahong XIE Yuanlai LIANG Lizhen Experimental study on the effect of cesium injection on negative ion yield of high power negative ion source He jishu radio frequency negative ion source surface generation cesium injection thermostatic control |
| title | Experimental study on the effect of cesium injection on negative ion yield of high power negative ion source |
| title_full | Experimental study on the effect of cesium injection on negative ion yield of high power negative ion source |
| title_fullStr | Experimental study on the effect of cesium injection on negative ion yield of high power negative ion source |
| title_full_unstemmed | Experimental study on the effect of cesium injection on negative ion yield of high power negative ion source |
| title_short | Experimental study on the effect of cesium injection on negative ion yield of high power negative ion source |
| title_sort | experimental study on the effect of cesium injection on negative ion yield of high power negative ion source |
| topic | radio frequency negative ion source surface generation cesium injection thermostatic control |
| url | http://www.hjs.sinap.ac.cn/thesisDetails#10.11889/j.0253-3219.2021.hjs.44.010602&lang=zh |
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