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Third harmonic electron cyclotron emission measurements on the Advanced Toroidal Facility

G.L. Bell, R.F. Gandy1993年被引用 16Nuclear FusionIF 3出版社

Measurements of third harmonic electron cyclotron emission have been made on the Advanced Toroidal Facility (ATF). Electron temperatures have been extracted from third harmonic, optically thin, electron cyclotron emission (ECE) measurements. The radial and temporal evolutions of the electron temperature have been characterized for electron cyclotron resonance heated discharges and for the early stages of neutral beam heated plasmas. A slab based emission model incorporating the equation of radiation transfer and ray tracing has been used to calculate the expected ECE. The results have been compared with experimental measurements. Measurements of the polarization of the third harmonic ECE during 1 T discharges have been compared with theoretical calculations of wave polarization rotation due to magnetic shear. Significant polarization of the emission was observed, and correction factors for a given wave frequency and peak density were obtained

日本語訳

第三高調波電子サイクロトロン放射の測定が、先進トロイダル装置(ATF)において行われた。電子温度は、第三高調波の光学的に薄い電子サイクロトロン放射(ECE)測定から抽出された。電子温度の動径方向および時間的発展は、電子サイクロトロン共鳴加熱放電および中性粒子ビーム加熱プラズマの初期段階について特徴づけられた。放射伝達方程式とレイトレーシングを組み込んだスラブベースの放射モデルを用いて、期待されるECEを計算した。その結果は実験測定と比較された。1 T放電中の第三高調波ECEの偏波測定は、磁気シアによる波動偏波回転の理論計算と比較された。放射の有意な偏波が観測され、特定の波動周波数およびピーク密度に対する補正係数が得られた。

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Electron cyclotron emission
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