Rchr
J-GLOBAL ID：200901040657708747
Update date: Apr. 26, 2024
Sakamoto Ryuichi
サカモト リュウイチ | Sakamoto Ryuichi
Affiliation and department：
Job title：
Professor
Other affiliations (1)：
Homepage URL (1)：
https://unit.nifs.ac.jp/research/archives/staff/sakamoto-ryuichi?paper=SakamotoRyuichi&unit=unit01&unitpage=43
Research field (1)：
Nuclear fusion
Research keywords (5)：
ablation
, Pellet injection
, fueling
, 高温プラズマ制御
, Plasma control
Research theme for competitive and other funds (14)：
- 2020 - 2025 Investigation of solid hydrogen ablation and homogenization processes for fueling to fusion plasmas
- 2021 - 2024 Exploitation of helical plasma experiments for quantitative study of fast tokamak shutdown scenario
- 2015 - 2018 Development of the Supersonic Jet Pump for Realization of Vacuum Pumping in the Fusion Reactor
- 2008 - 2012 Production and Control of Super-Dense Plasmas towards an Innovative Ignition Regime for a Fusion Reactor
- 2009 - 2011 Dynamic behavior of non diffusive transport of high density plasmoid in high temperature plasmas
- 2006 - 2009 Dynamic Transport of ion with fast charge exchange spectroscopy
- 2007 - 2008 Observation of non diffusive transport of high density plasmoid in high temperature plasmas
- 2005 - 2008 Development of Synergetic Fueling Control Compatible with Confinement Improvement and Sustainability of High-Temperature Plasma
- 2004 - 2006 Study on self-regulation and controllability in burning plasmas
- 2001 - 2004 Development of durable solid-hydrogen pellet injector for fueling to fusion plasmas
- 1999 - 2002 Effect of magnetic-field gradient on dissipation of high-beta plasmoid in high-temperature plasmas
- 1998 - 2000 高温プラズマ定常保持のための閉じ込め境界層の条件と密度限界の研究
- 1997 - 磁場によって閉じ込められた高温プラズマの粒子制御に関する研究および高温プラズマへの粒子供給法の開発研究
- 1997 - Plasma fueling by using solid hydrogen pellet
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Papers (282)：
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B. Pégourié, E. Geulin, M. Goto, A. Matsuyama, G. Motojima, R. Sakamoto. Structure of pellet cloud emission and relation with the local ablation rate. Nuclear Fusion. 2024
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Ryuichi Sakamoto, Elodie Bernard, Arkadi Kreter, Céline Martin. Impact of helium and hydrogen plasma exposure on surface damage and erosion of tungsten. Nuclear Fusion. 2024
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Ryuichi Sakamoto, Kenichi Nagaoka, Daisuke Nagata, Yutaka Fujiwara, Mamoru Sato, Katsuyoshi Tsumori. Potential impact of surface microstructure change on reduction of emission current in tungsten filament. Fusion Engineering and Design. 2024
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N. Panadero, K. J. McCarthy, B. Pégourié, R. Carrasco, I. García-Cortés, R. García, J. Hernández-Sánchez, F. Köchl, J. Martínez-Fernández, R. Sakamoto. Using rational surfaces to improve pellet fuelling in stellarators. Journal of Plasma Physics. 2023
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A. Matsuyama, R. Sakamoto, R. Yasuhara, H. Funaba, H. Uehara, I. Yamada, T. Kawate, M. Goto. Enhanced Material Assimilation in a Toroidal Plasma Using Mixed H2+Ne Pellet Injection and Implications to ITER. Physical Review Letters. 2022
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MISC (17)：
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H. Tanaka, LHD Experiment Group, G. Kawamura, S. Masuzaki, M. Kobayashi, T. Akiyama, B. J. Peterson, K. Mukai, R. Sano, S. Y. Dai, et al. Toroidally symmetric/asymmetric effect on the divertor flux due to neon/nitrogen seeding in LHD. Nuclear Materials and Energy. 2017. 12. 241-246
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G. Motojima, S. Masuzaki, H. Tanaka, T. Morisaki, R. Sakamoto, T. Murase, Y. Tsuchibushi, M. Kobayashi, O. Schmitz, M. Shoji, et al. Establishment of a low recycling state with full density control by active pumping of the closed helical divertor at LHD. Nuclear Fusion. 2017. 58. 1. 014005
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M. Emoto, K. Ida, C. Suzuki, M. Yoshida, T. Akiyama, Y. Nakamura, R. Sakamoto, M. Yokoyama, M. Yoshinuma. Automatically processing physical data from LHD experiments. FUSION ENGINEERING AND DESIGN. 2014. 89. 5. 758-760
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A. Murakami, A. Murakami, J. Miyazawa, C. Suzuki, Yamada, T. Morisaki, R. Sakamoto, H. Yamada. Fueling characteristics of supersonic gas puffing applied to large high-temperature plasma in LHD. 38th EPS Conference on Plasma Physics 2011, EPS 2011 - Europhysics Conference Abstracts. 2011. 35 2. 1292-1295
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H. Yamada, K. Kawahata, T. Mutoh, N. Ohyabu, Y. Takeiri, S. Imagawa, K. Ida, T. Mito, Y. Nagayama, T. Shimozuma, et al. Progress in the integrated development of the helical system. Fusion Science and Technology. 2010. 58. 1. 12-28
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Education (2)：
- - 1996 Kyushu University
- - 1991 Shinshu University Faculty of Engineering
Professional career (1)：
Awards (2)：
- 2009/04 - 平成21年度科学技術分野の文部科学大臣表彰(研究部門) 『核融合炉への新たな道を拓く超高密度プラズマの研究』
- 2000/06 - 第3回核融合エネルギー連合講演会若手ポスター発表優秀賞 『LHD におけるペレットの溶発挙動とプラズマへの影響』
Association Membership(s) (3)：
プラズマ・核融合学会
, American Physical Society
, The Physical Society of Japan
