Characterization of detachment inferred from the Balmer line ratios in JET-ILW low-confinement mode plasmas

被引：0
|
作者：
Rikala, Vesa-Pekka [1 ]
Groth, M. [1 ]
Meigs, A. G. [2 ]
Reiter, D. [3 ]
Lomanowski, B. [2 ,4 ]
Shaw, A. [2 ]
Aleiferis, S. [2 ]
Corrigan, G. [2 ]
Carvalho, I. S. [2 ,5 ]
Harting, D. [2 ,6 ]
Horsten, N. [1 ,7 ]
Jepu, I. [2 ]
Karhunen, J. [1 ,2 ,8 ]
Lawson, K. D. [2 ]
Lowry, C. [2 ]
Menmuir, S. [2 ]
Thomas, B. [2 ]
Borodin, D. [6 ]
Douai, D. [9 ]
Huber, A. [2 ,6 ]
机构：
[1] Aalto Univ, Dept Appl Phys, Espoo, Finland
[2] UKAEA, Culham Sci Ctr, Abingdon, England
[3] Heinrich Heine Univ Dusseldorf, Dusseldorf, Germany
[4] Oak Ridge Natl Lab, Oak Ridge, TN USA
[5] ITER Org, CS 90 046, F-13067 St Paul Les Durance, France
[6] Forschungszentrum Julich, Inst Energie & Klimforsch Plasmaphys, Partner Trilateral Euregio Cluster TEC, Julich, Germany
[7] Katholieke Univ Leuven, Leuven, Belgium
[8] Univ Helsinki, Helsinki, Finland
[9] CEA IFRM Cadarache, St Paul Les Durance, France
来源：
NUCLEAR MATERIALS AND ENERGY | 2025年 / 42卷
关键词：
Fusion; Scrape-off layer; Divertor visible spectroscopy; EDGE2D; EIRENE; DIVERTOR SPECTROSCOPY; RECOMBINATION;
D O I：
10.1016/j.nme.2025.101893
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
Spectroscopic measurements of the hydrogenic Balmer-a and Balmer-y line emission in JET-ILW low- confinement mode (L-mode) deuterium plasmas are used to assess the onset of volume recombination in the low-field side (LFS) divertor. The evolution of the EDGE2D-EIRENE predicted Balmer-y to Balmer-a emission ratio from low-recycling to detached conditions is in qualitative agreement with the measured ratio. In low- recycling conditions the EDGE2D-EIRENE predicted line-emission is within 30% of measured emission, in high-recycling within 20%t, and in detached conditions lower by a factor of 2.5.
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页数：10
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