| Project/Area Number |
10480096
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| Research Category |
Grant-in-Aid for Scientific Research (B).
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
プラズマ理工学
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| Research Institution | Tohoku University |
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Principal Investigator |
ANDO Akira Tohoku University, Graduate School of Engineering, Associate Professor, 大学院・工学研究科, 助教授 (90182998)
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| Co-Investigator(Kenkyū-buntansha) |
HATTORI Kunihiko Tohoku University, Graduate School of Engineering, Associate Researcher, 大学院・工学研究科, 助手 (90261578)
INUTAKE Masaaki Tohoku University, Graduate School of Engineering, Professor, 大学院・工学研究科, 教授 (90023738)
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| Project Period (FY) |
1998 – 1999
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| Project Status |
Completed (Fiscal Year 2001)
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| Budget Amount *help |
¥10,800,000 (Direct Cost: ¥10,800,000)
Fiscal Year 1999: ¥5,900,000 (Direct Cost: ¥5,900,000)
Fiscal Year 1998: ¥4,900,000 (Direct Cost: ¥4,900,000)
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| Keywords | Electromagnetic volticies / Plasma flow / Visible-light detector / Computer Tomography / Alfven waves / HITOP / MHD / 電磁流体 / 渦 / トモグラフィー |
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| Research Abstract |
(1) Development of multi-channel visible-light detector array
A multi-channel visible-light detector array was fabricated in order to investigate electromagnetic behaviors in a high-beta plasma flow.
The detector array consisted of two 12-ch visible-light detectors and was able to obtain various line-emission from two different directions. A computer tomography technique was utilized to obtain a 2-D emission profile from the observed data.
(2) Observation of electromagnetic instability in a plasma flow
Spatial profiles obtained by the detector array were compared with those by Langmuir probes in a uniform magnetic field.
It was observed that a cylindrical plasma rotated eccentrically around the center axis in a divergent magnetic field. The spatial and temporal behaviors were measured by the detector array with two filters for Hel and Hell lines. The structure of these voltex-like instabilities was also measured by a CCD camera with a fast electric shutter.
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