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

Determination of atomic hydrogen density and fluorescence decay time by 1D resolved, picosecond TALIF in the RAID linear device

L Kadi, M Baquero-Ruiz, Y Andrebe, Ph Guittienne, R Jacquier, R Karimov, C Stollberg, I Furno2024年12月Plasma Physics and Controlled FusionIF 2.2出版社

We report on the first 1D resolved two-photon absorption laser-induced fluorescence (TALIF) measurements of atomic hydrogen (H) performed in the Resonant Antenna Ion Device using a picosecond laser system. The results are obtained across a cylindrical plasma column with peak electron density and temperature on axis, which decrease monotonically to and 0.75 eV over a scale of a few cm away from the axis. TALIF results in these conditions are compatible with a uniform H density profile across the observed region, with a mean dissociation degree close to 3%. The small variation of H density across regions covering a wide range of plasma parameters suggests that transport processes and wall interactions play an important role in determining the H density profile. The fluorescence decay time is close to at all observed locations, a result compatible with complete substate mixing of the n = 3 states of H.

日本語訳

我々は、ピコ秒レーザーシステムを用いてResonant Antenna Ion Deviceで実施した、原子状水素(H)の初の1次元分解二光子吸収レーザー誘起蛍光(TALIF)測定について報告する。結果は、軸上でピークとなる電子密度 と温度 を持ち、軸から数cm離れると単調に および0.75 eVまで減少する円筒状プラズマ柱にわたって得られた。これらの条件でのTALIF結果は、観測領域全体にわたって一様なH密度分布と適合し、平均解離度は約3%である。広範囲のプラズマパラメータをカバーする領域にわたるH密度の小さな変動は、輸送過程と壁との相互作用がH密度分布を決定する上で重要な役割を果たすことを示唆している。蛍光減衰時間は観測されたすべての位置でほぼ であり、これはHのn = 3状態の完全な副準位混合と適合する結果である。

AIによる論文要約

原子水素密度と蛍光減衰時間の1D解像度ピコ秒TALIF測定
JAこの論文は、プラズマ物理や核融合研究に携わる研究者や学生に有用です。水素プラズマの診断手法と物理過程の理解を深めることができます。#PlasmaPhysics #FusionResearch #HydrogenPlasma #TALIF #PlasmaCharacterization
LLM向け: {'Title': '1D解像度ピコ秒TALIFによる原子水素密度と蛍光減衰時間の測定', 'Author(s)': '不明', 'Research Objec…

この論文では、RAID線形デバイスにおける原子水素(H)の1D解像度二光子吸収レーザー誘起蛍光(TALIF)測定の結果が報告されています。ピコ秒レーザーシステムを使用し、電子密度と温度が軸方向に変化する条件下で、H密度分布とn=3準位の蛍光減衰時間を明らかにしています。この知見は、水素プラズマの輸送過程と壁面相互作用の理解に役立つと考えられます。

Determination of atomic hydrogen density and fluorescence decay time by 1D resolved, picosecond TALIF in the RAID linear device
ENThis paper is of interest to fusion researchers and plasma physicists studying the behavior of atomic hydrogen in linear plasma devices. The findings provide insights into the fundamental processes governing hydrogen dynamics, which are crucial for understanding and optimizing plasma-based fusion systems.#PlasmaPhysics #FusionResearch #AtomicHydrogen #TALIF #LinearPlasmaDevice
LLM向け: {'Title': 'Determination of atomic hydrogen density and fluorescence decay time …

This paper presents the first 1D resolved two-photon absorption laser-induced fluorescence (TALIF) measurements of atomic hydrogen in a linear plasma device. The results show a uniform hydrogen density profile across a wide range of plasma parameters, suggesting that transport processes and wall interactions play a key role in determining the hydrogen density.

関連論文

A measurement method of absolute hydrogen atom density in plasmas by(2+1)-photon laser-induced fluorescence spectroscopy

2001Review of Scientific Instruments

Evaluation of radial particle flux profile based on atomic hydrogen density measurements using laser induced fluorescence and emission at Halpha

1995Nuclear Fusion

Quantitative two-photon laser-induced fluorescence measurements of atomic hydrogen densities, temperatures, and velocities in an expanding thermal plasma

2002Review of Scientific Instruments

Two photon absorption laser induced fluorescence measurements of neutral density in a helicon plasma

2014Physics of Plasmas

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

1989Nuclear Fusion

Determination of the velocity profile of a streaming highly ionized plasma by laser-induced fluorescence spectroscopy

1990Plasma Physics and Controlled Fusion

An absolute measurement of the neutral density profile in the tokamak plasma by resonance fluorescence on the Hα line

1979Nuclear Fusion

Measurements of atomic hydrogen density in the plasma of FT-1 Tokamak by the resonance fluorescence method

1988Plasma Physics and Controlled Fusion

Density limit for lower hybrid wave-electron interaction and minority hydrogen absorption in FT

1984Nuclear Fusion

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

1988Nuclear Fusion