Clarification of the complexity of ion dynamics interacted with waves
Project/Area Number |
18K03574
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 14010:Fundamental plasma-related
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Research Institution | Kyushu University |
Principal Investigator |
Ikezoe Ryuya 九州大学, 応用力学研究所, 准教授 (70582849)
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Project Period (FY) |
2018-04-01 – 2021-03-31
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Project Status |
Completed (Fiscal Year 2020)
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Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2018: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
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Keywords | 複雑性 / イオンダイナミクス / 時系列データ解析 / C-Hマップ / 高エネルギーイオン / アルベン波動 / ピッチ角散乱 / イオン検出器 / 時系列データ / 順列エントロピー / イオンサイクロトロン共鳴 / アルベン波 / 波動粒子相互作用 / 波動 / ミラー捕捉 / Jensen-Shannon複雑性 / 無衝突プラズマ / 磁化プラズマ |
Outline of Final Research Achievements |
We analyzed the complexity of time-series data with the aim of understanding the process of determining complexity in high-temperature magnetized plasmas. How to obtain a signal that strongly reflects a specific physical process is important in experiments. In this study, we focused on the characteristics of high-temperature mirror plasma and measured the high-energy ion flux transported along the magnetic field lines by interaction with waves with high accuracy. We have succeeded in investigating the complexity of ion dynamics, which reflects the interaction with waves that was not visible in plasmas dominated by Coulomb collisions. Experiments have shown that evaluation using Jensen-Shannon complexity and permutation entropy is sensitive to waves, and that the effects of waves through pitch angle scattering change the complexity of ion dynamics.
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Academic Significance and Societal Importance of the Research Achievements |
太陽風プラズマは非常に多スケールの乱流が発達しているためにストキャスティックな信号を示すと言われていますが、実験室プラズマではそうではありません。物理素過程と信号の複雑性についての理解を深めることで、多点計測が困難な宇宙プラズマで起きている現象と地上での実験結果とをリンクさせて解明したり、核融合炉の実現に求められる乱流輸送の理解へと繋げることが可能です。本研究では磁力線に沿って流れてくるイオンを高時間分解能で直接測定できる検出器とプラズマ実験装置を用い、波動がイオンの統計的複雑性に影響することを実験で初めて示しました。
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Report
(4 results)
Research Products
(11 results)
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[Journal Article] Observation of Ion Heating Using the Difference Frequency of Two ICRF Waves in GAMMA 10/PDX2021
Author(s)
Hiroki KAYANO, Seowon JANG, Mafumi HIRATA, Naomichi EZUMI, Hibiki YAMAZAKI, Kairi SUGATA, Takumi AIZAWA, Daichi NOGUCHI, Doyeon KIM, Yudai SUGIMOTO, Reina MATSUURA, Ryuya IKEZOE, Masayuki YOSHIKAWA, Makoto ICHIMURA and Mizuki SAKAMOTO
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Journal Title
Plasma and Fusion Research
Volume: 16
Issue: 0
Pages: 2402045-2402045
DOI
NAID
ISSN
1880-6821
Year and Date
2021-03-12
Related Report
Peer Reviewed
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[Journal Article] Measurement of End-Loss Ions Originated from Spontaneously Excited High Frequency Waves by Using an MCP Detector on GAMMA 10/PDX2019
Author(s)
Koki IZUMI, Ryuya IKEZOE, Makoto ICHIMURA, Mafumi HIRATA, Mizuki SAKAMOTO, Shuhei SUMIDA, Seowon JANG, Atsuto TANAKA, Yushi KUBOTA, Ryo SEKINE, Hiroki KAYANO and Yousuke NAKASHIMA
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Journal Title
Plasma and Fusion Research
Volume: 14
Issue: 0
Pages: 2402033-2402033
DOI
NAID
ISSN
1880-6821
Year and Date
2019-02-12
Related Report
Peer Reviewed / Open Access
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[Journal Article] Effect of the Potential of Confined Plasma on End-Loss Ion in GAMMA 10/PDX2019
Author(s)
Seowon JANG, Makoto ICHIMURA, Mafumi HIRATA, Ryuya IKEZOE, Mizuki SAKAMOTO, Shuhei SUMIDA, Koki IZUMI, Atsuto TANAKA, Yushi KUBOTA, Ryo SEKINE, Hiroki KAYANO and Yousuke NAKASHIMA
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Journal Title
Plasma and Fusion Research
Volume: 14
Issue: 0
Pages: 2402032-2402032
DOI
NAID
ISSN
1880-6821
Year and Date
2019-02-12
Related Report
Peer Reviewed / Open Access
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[Journal Article] Observation of Density Fluctuations Originated from RF Waves with Two-Channel Reflectometer in GAMMA 10/PDX2019
Author(s)
Ryo SEKINE, Ryuya IKEZOE, Seowon JANG, Mafumi HIRATA, Makoto ICHIMURA, Mizuki SAKAMOTO, Shuhei SUMIDA, Koki IZUMI, Atsuto TANAKA, Yushi KUBOTA, Hiroki KAYANO and Yousuke NAKASHIMA
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Journal Title
Plasma and Fusion Research
Volume: 14
Issue: 0
Pages: 2402011-2402011
DOI
NAID
ISSN
1880-6821
Year and Date
2019-01-24
Related Report
Peer Reviewed / Open Access
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[Journal Article] A Full Wave Simulation on the Density Dependence of a Slow Wave Excitation in the GAMMA 10/PDX Central Cell with TASK/WF3D2019
Author(s)
Ryuya IKEZOE, Yushi KUBOTA, Makoto ICHIMURA, Mafumi HIRATA, Shuhei SUMIDA, Seowon JANG, Koki IZUMI, Atsuto TANAKA, Ryo SEKINE, Hiroki KAYANO, Yoriko SHIMA, Junko KOHAGURA, Masayuki YOSHIKAWA, Mizuki SAKAMOTO, Yousuke NAKASHIMA and Atsushi FUKUYAMA
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Journal Title
Plasma and Fusion Research
Volume: 14
Issue: 0
Pages: 2402003-2402003
DOI
NAID
ISSN
1880-6821
Year and Date
2019-01-24
Related Report
Peer Reviewed / Open Access
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[Presentation] Observation of plasma heating by waves with Difference-Frequency of two ICRF waves in the GAMMA 10/PDX2020
Author(s)
Hiroki KAYANO, Seowon JANG, Mafumi HIRATA, Naomichi EZUMI, Hibiki YAMAZAKI, Kairi SUGATA, Takumi AIZAWA, Daichi NOGUCHI, Doyeon KIM, Yudai SUGIMOTO, Reina MATSUURA, Ryuya IKEZOE, Masayuki YOSHIKAWA, Makoto ICHIMURA and Mizuki SAKAMOTO
Organizer
29th International Toki Conference on Plasma and Fusion Research
Related Report
Int'l Joint Research
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