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Fast-ion distributions from third harmonic ICRF heating studied with neutron emission spectroscopy

C. Hellesen, M. Gatu Johnson, E. Andersson Sundén, S. Conroy, G. Ericsson, J. Eriksson, H. Sjöstrand, M. Weiszflog, T. Johnson, G. Gorini2013年被引用 52Nuclear FusionIF 3出版社

The fast-ion distribution from third harmonic ion cyclotron resonance frequency (ICRF) heating on the Joint European Torus is studied using neutron emission spectroscopy with the time-of-flight spectrometer TOFOR. The energy dependence of the fast deuteron distribution function is inferred from the measured spectrum of neutrons born in DD fusion reactions, and the inferred distribution is compared with theoretical models for ICRF heating. Good agreements between modelling and measurements are seen with clear features in the fast-ion distribution function, that are due to the finite Larmor radius of the resonating ions, replicated. Strong synergetic effects between ICRF and neutral beam injection heating were also seen. The total energy content of the fast-ion population derived from TOFOR data was in good agreement with magnetic measurements for values below 350 kJ.

日本語訳

第三高調波イオンサイクロトロン共鳴周波数(ICRF)加熱による高速イオン分布を、飛行時間型分光器TOFORを用いた中性子放出分光法により、欧州トーラス共同実験装置(JET)において研究した。DD核融合反応で生成される中性子の測定スペクトルから、高速重陽子分布関数のエネルギー依存性を推定し、その推定分布をICRF加熱の理論モデルと比較した。モデルと測定の間には良好な一致が見られ、共鳴イオンの有限ラーモア半径に起因する高速イオン分布関数の特徴的な構造が再現された。また、ICRFと中性粒子ビーム入射の間の強い相乗効果も観測された。TOFORのデータから導出された高速イオン集団の全エネルギー含有量は、350 kJ以下の値において磁気測定と良好な一致を示した。

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jet低精度(概要文一致)

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Fusion Advanced Studies TorusIon cyclotron heatingEnergetic ionEmission spectroscopyNeutron emission
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