1987 Fiscal Year Final Research Report Summary
Mode Conversion Phenomena of Electromagnetic Waves in a Magnetized Plasma
| Project/Area Number |
61460227
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
プラズマ理工学
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| Research Institution | Nagoya University |
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Principal Investigator |
SUGAI Hideo Faculty of Engineering,Nagoya University, 工学部, 教授 (40005517)
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| Project Period (FY) |
1986 – 1987
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| Keywords | Weve Heating / Mode Conversion / Ordinary Mode / Extraordinary Mode / Bernstein Mode Upper-Hybrid Resonance / Electron Cyclotron Resonance / 電子サイクロトロン共鳴 / レィトレーシング |
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| Research Abstract |
An slsctromagnetic wave of ordinary mode (O-mode) at frequency near the second electron cyclotron harmonic is obliquely incident on an overdense (<omega>_p><omega>) large-volume plasma. Two -dimensional measurements of wave propagations suggest the cascade mode-conversion; the first conversion from O-mode to X-mode at the critical density (<omega>=<omega>_p),and the second conversion from X-mode to Bernstein mode at the upper hybrid resonance.For high power incidence,electron heating takes place locally around the upper hybrid layer where the intense Bernstein-mode signals are detected.The heating is observed only for <omega>_p><omega>,supporting the cascade mode-conversion.
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