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

Emission of high rovibrational hydrogen molecules under detached plasma conditions by recycling on the tungsten wall

Seiki Saito, Hiroaki Nakamura, Keiji Sawada, Kazuo Hoshino, Yuki Kojima, Takeshi Doi, Masahiro Kobayashi, Masahiro Hasuo, Yuki Homma, Shohei Yamoto2024年12月Nuclear FusionIF 3出版社

It is well known that the rate coefficient of molecular-assisted recombination (MAR) varies by several orders of magnitude depending on the rovibrational states of the hydrogen molecules. A molecular dynamics simulation is performed to estimate the rovibrational states of recycled hydrogen molecules at the divertor in the JA-DEMO reactor under detached plasma conditions. The simulation results reveal that molecules in high rovibrational states are released even with low incident energy, which will be the dominant condition under detached plasma conditions. Molecules generated in this way can strongly affect the formation of the detached plasma via a molecular assisted-process such as MAR.

日本語訳

水素分子の回転振動状態に依存して、分子支援再結合(MAR)の速度係数が数桁も変化することはよく知られている。非接触プラズマ条件におけるJA-DEMO炉のダイバータでリサイクルされた水素分子の回転振動状態を推定するために、分子動力学シミュレーションを実施した。シミュレーション結果は、非接触プラズマ条件下で支配的となる低入射エネルギーであっても、高い回転振動状態の分子が放出されることを明らかにした。このようにして生成された分子は、MARなどの分子支援過程を介して非接触プラズマの形成に強く影響し得る。

wiki

TungstenRecycling

AIによる論文要約

高ロビブレーショナル水素分子の放出:デタッチドプラズマ条件下での壁面リサイクリング
JAこの論文は、核融合プラズマの挙動や壁面との相互作用に興味のある研究者や学生に有益です。特に、プラズマ物理や材料科学の専門家にとって重要な知見が得られるでしょう。#核融合#プラズマ物理#材料科学#デタッチドプラズマ#水素分子
LLM向け: {'Title': '高ロビブレーショナル水素分子の放出:デタッチドプラズマ条件下での壁面リサイクリング', 'Author(s)': '不明', 'Resea…

この論文は、デタッチドプラズマ条件下でのJA-DEMO炉における水素分子の高ロビブレーショナル状態の放出について報告しています。分子動力学シミュラーションの結果、低入射エネルギーでも高ロビブレーショナル状態の水素分子が放出されることが明らかになりました。このような分子は分子支援再結合プロセスを通じてデタッチドプラズマの形成に大きな影響を及ぼします。

Emission of high rovibrational hydrogen molecules under detached plasma conditions by recycling on the tungsten wall
ENThis paper is of interest to fusion researchers studying plasma-wall interactions, detached plasma formation, and the role of molecular processes in fusion devices.#FusionPlasma #PlasmaWallInteraction #MolecularRecombination
LLM向け: {'Title': 'Emission of high rovibrational hydrogen molecules under detached plas…

This paper investigates the rovibrational states of hydrogen molecules released from the tungsten wall under detached plasma conditions in the JA-DEMO reactor. The study finds that high rovibrational state molecules are emitted even with low incident energy, which can significantly impact the formation of the detached plasma through molecular-assisted recombination.

関連論文

Hydrogen isotope effects on recombination dominant plasmas in NAGDIS-II

2024Plasma Physics and Controlled Fusion

A novel hydrogenic spectroscopic technique for inferring the role of plasma–molecule interaction on power and particle balance during detached conditions

2021Plasma Physics and Controlled Fusion

A molecular dynamics study on the characteristics of molecules released from tungsten plasma-facing components

2026Nuclear Fusion

Determination of atomic and molecular particle densities and temperatures in a low-pressure hydrogen hollow cathode discharge

1997Plasma Physics and Controlled Fusion

Measurement of cross-field power loss due to rovibrationally excitedH2in a detached hydrogen divertor plasma simulator

2006Physics of Plasmas

Plasma kinetics in molecular plasmas and modeling of reentry plasmas

2011Plasma Physics and Controlled Fusion

B2.5-Eunomia simulations of Magnum-PSI detachment experiments: II. Collisional processes and their relevance

2022Plasma Physics and Controlled Fusion

Studying the influence of nitrogen seeding in a detached-like hydrogen plasma by means of numerical simulations

2018Plasma Physics and Controlled Fusion

Investigation of the role of hydrogen molecules in 1D simulation of divertor detachment

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