FusionPapers
図版検索トレンドwiki日本の研究
© 2026 FUSIONPAPERS
About法務情報
トップに戻る

Simultaneous heating by high power lower hybrid waves and neutral beams in the JT-60 tokamak

K. Ushigusa, T. Imai, Y. Ikeda, K. Sakamoto, F.X. Söldner, Y. Takase, S. Tsuji, K. Shimizu, O. Naito, K. Uehara1989年被引用 15Nuclear FusionIF 3出版社

By injection of high power lower hybrid (LH) waves of up to 6.0 MW into neutral beam heated (20 MW) plasmas in the medium electron density regime (e ≤ 3.5 × 1019 m-3) the plasma energy content is increased at the same incremental energy confinement time as it is increased with neutral beam heating alone. When LH heating is used in addition to thermal electron and ion heating, the beam ions are accelerated to energies considerably higher than the beam injection energy. In contrast to LH injection into ohmically heated plasmas in the same density regime, where substantial high energy electron production is observed, there are much less high energy electrons in the case of combined heating. The heating efficiency of LH waves during combined heating tends to decrease as the electron density is increased. Ray tracing analysis suggests that the accessibility condition prevents effective heating in a high density plasma. Calculation of wave damping, taking into account the beam component of the ion velocity distribution function, indicates that the waves are absorbed by beam ions before they are absorbed by electrons.

日本語訳

中性粒子ビーム加熱(20 MW)されたプラズマ中に、最大6.0 MWの高パワー低域混成(LH)波を入射することにより、中程度の電子密度領域(e ≤ 3.5 × 10¹⁹ m⁻³)において、プラズマエネルギー含有量は、中性粒子ビーム加熱単独の場合と同様の増分エネルギー閉じ込め時間で増加する。LH加熱を熱電子および熱イオン加熱に追加して用いる場合、ビームイオンはビーム入射エネルギーよりもかなり高いエネルギーまで加速される。同じ密度領域におけるオーム加熱プラズマへのLH波入射では、かなりの高エネルギー電子生成が観測されるのに対し、複合加熱の場合には高エネルギー電子ははるかに少ない。複合加熱中のLH波の加熱効率は、電子密度の増加に伴って低下する傾向がある。光線追跡解析は、高密度プラズマではアクセシビリティ条件が効果的な加熱を妨げることを示唆している。イオン速度分布関数のビーム成分を考慮した波動減衰の計算は、波動が電子によって吸収される前にビームイオンによって吸収されることを示している。

装置

jt-60sa高精度(タイトル一致)

wiki

Neutral beamLower hybridJT-60
この論文にはまだAI要約がありません。

関連論文

Heating of a large CTR-tokamak by neutral-beam injection

1974Nuclear Fusion

Wave heating of an ion beam in a tokamak plasma

1978Nuclear Fusion

Interpretation of electron cyclotron heating results in overdense plasma in Doublet III

1987Nuclear Fusion

Enhancement of high-energy ion tails in the presence of combined neutral-beam and ICRF heating of a two-component plasma

1983Nuclear Fusion

Enhancement of energy confinement by acceleration of fast ions in combined lower hybrid and neutral beam heating on JT-60

1990Nuclear Fusion

Role of pre-ionization in NBI plasma start-up of Heliotron J using non-resonant microwave heating

2021Nuclear Fusion

High-ion temperature experiments with negative-ion-based neutral beam injection heating in Large Helical Device

2005Nuclear Fusion

Simultaneous heating by ICRF wave and neutral-beam injection

1984Nuclear Fusion

RF experiments on PLT

1986Plasma Physics and Controlled Fusion

Plasma heating by electron cyclotron wave and the temperature effects on lower hybrid current drive on EAST

2023Nuclear Fusion