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

Atomic and molecular deuteriumedge density evaluation from spectral analysis of the Dα lineshape

A Escarguel, B Pégourié, J Hogan, C De Michelis, Y Corre, A Azéroual, J M Ané, R Guirlet, J Gunn, H Capes2001年Plasma Physics and Controlled FusionIF 2.2出版社

A method for molecular and atomic deuterium density evaluation, based on the analysis of the Dα spectral line shape coupled to a collisional radiative model, is presented. It is illustrated by its application to the plasma edge in the ergodic divertor configuration of the tokamak Tore Supra. An important molecular density (nD2>1018 m-3, 1 cm radially away from the neutralizer plate), of the same order as the total atomic density nD (nD/nD2~1.4), is found for the entire range of edge electron temperatures (10 eV<Te<40 eV). The density ratio of D atoms created by charge exchange or reflection of deuterons on the neutralizer plate and D atoms coming from D2 dissociation is approximately constant for electron temperatures larger than 20 eV (~0.9). A reasonable agreement is found with the results of the multi-one-dimensional code EDCOLL and the three-dimensional Monte Carlo code BBQ. The influence of the electron temperature and density distributions along the spectroscopic line of sight on the measurements is discussed in the frame of simulations with the numerical code EDCOLL.

日本語訳

分子状および原子状重水素密度評価のための手法を、衝突放射モデルと組み合わせたDαスペクトル線形状の解析に基づいて提示する。この手法は、トカマクTore Supraのエルゴディックダイバータ配位におけるプラズマ周辺部への適用によって例示される。中性子化板から半径方向に1 cmの位置において、重要な分子状重水素密度(nD2>10¹⁸ m⁻³)が、原子状重水素密度nDと同程度(nD/nD2~1.4)であることが、周辺電子温度の全範囲(10 eV<Te<40 eV)にわたって見出された。中性子化板上での重水素の電荷交換または反射によって生成されるD原子と、D₂の解離に由来するD原子との密度比は、電子温度が20 eVを超える範囲(~0.9)でほぼ一定である。多一次元コードEDCOLLおよび三次元モンテカルロコードBBQの結果と合理的な一致が見られる。視線に沿った電子温度および密度分布が測定に及ぼす影響について、数値コードEDCOLLを用いたシミュレーションの枠組みで議論する。

この論文にはまだAI要約がありません。

関連論文

The spectral profile of the line emitted from the divertor region of JT-60U

1998Plasma Physics and Controlled Fusion

Spectroscopic measurement of atomic and molecular deuterium fluxes in the DIII-D plasma edge

2006Plasma Physics and Controlled Fusion

Outer midplane neutral density measurements and H-mode fueling studies in NSTX-U

2021Nuclear Fusion

Analysis of asymmetric Dα spectra emitted in front of a neutralizer plate of the Tore-Supra ergodic divertor

2002Plasma Physics and Controlled Fusion

Experimental distinction of the molecularly induced Balmer emission contribution and its application for inferring molecular divertor density with 2D filtered camera measurements during detachment in JET L-mode plasmas

2022Plasma Physics and Controlled Fusion

Hydrogen release from plasma-facing components into fusion plasmas - recent results from a spectroscopic approach

2001Plasma Physics and Controlled Fusion

Spectroscopic determination of hydrogen and electron densities in plasma in the ionizing phase: Application to WT-III

1989Nuclear Fusion

Simulation of density fluctuations before the L-H transition for Hydrogen and Deuterium plasmas in the DIII-D tokamak using the BOUT++ code

2018Nuclear Fusion

Characterization of core neutrals using passive measurements of the Dα spectrum near the X-point in the DIII-D tokamak

2026Plasma Physics and Controlled Fusion

New density diagnostic method based on emission line intensity ratio of neutral hydrogen in an ionizing phase plasma

1988Nuclear Fusion