Influence of Nitrogen Ratio on Plasma Detachment during Combined Seeding with Hydrogen on Divertor Simulation Experiment of GAMMA 10/PDX
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- GAMO Hiroki
- Plasma Research Center, University of Tsukuba
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- EZUMI Naomichi
- Plasma Research Center, University of Tsukuba
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- SUGIYAMA Tsukasa
- Plasma Research Center, University of Tsukuba
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- NOJIRI Kunpei
- Plasma Research Center, University of Tsukuba
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- KONDO Ayane
- Plasma Research Center, University of Tsukuba
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- HIRATA Mafumi
- Plasma Research Center, University of Tsukuba
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- KOHAGURA Junko
- Plasma Research Center, University of Tsukuba
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- YOSHIKAWA Masayuki
- Plasma Research Center, University of Tsukuba
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- NAKASHIMA Yousuke
- Plasma Research Center, University of Tsukuba
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- HWANGBO Dogyun
- Plasma Research Center, University of Tsukuba
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- SAKAMOTO Mizuki
- Plasma Research Center, University of Tsukuba
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- PERILLO Renato
- University of California San Diego
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- KUWABARA Tatsuya
- Graduate School of Engineering, Nagoya University
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- TANAKA Hirohiko
- Graduate School of Engineering, Nagoya University
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- OHNO Noriyasu
- Graduate School of Engineering, Nagoya University
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- SAWADA Keiji
- Faculty of Engineering, Shinshu University
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- TONEGAWA Akira
- Graduate School of Science, Tokai University
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- MASUZAKI Suguru
- National Institute for Fusion Science
Description
<p>Influences of nitrogen ratio on plasma detachment and molecular activated recombination (MAR) processes during combined seeding with hydrogen have been investigated utilizing end-loss plasma in the GAMMA 10/PDX tandem mirror. Additional gases were injected under the condition that hydrogen partial pressure was fixed and nitrogen partial pressure was changed from 0% - 10% compared to that of hydrogen. Electron density and ion flux further decrease with increasing nitrogen ratio. In addition, it is suggested that the hydrogen-MAR process that begins with dissociative attachment is suppressed during combined seeding of nitrogen and hydrogen. Observed emission spectrum of NH radicals suggests that the density of NH increases as nitrogen ratio increases and nitrogen-induced MAR efficiently contributes to the reduction of particle flux.</p>
Journal
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- Plasma and Fusion Research
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Plasma and Fusion Research 16 (0), 2402041-2402041, 2021-03-19
The Japan Society of Plasma Science and Nuclear Fusion Research
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Keywords
Details 詳細情報について
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- CRID
- 1390569236138164224
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- NII Article ID
- 130008028416
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- ISSN
- 18806821
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- Text Lang
- en
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed