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

Rikala V.-P.; Līga Avotiņa; Larisa Baumane; Mihails Haļitovs; Patrīcija Kalniņa; Gunta Ķizāne; Andris Leščinskis; Elīna Pajuste; Anete Stīne Teimane; Aigars Vītiņš; Rūdolfs Jānis Zabolockis; Artūrs Zariņš; JET Contributors

doi:10.1016/j.nme.2025.101893

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

Rikala V.-P.
, Līga Avotiņa (Member of the Working Group)
, Larisa Baumane (Member of the Working Group)
, Mihails Haļitovs (Member of the Working Group)
, Patrīcija Kalniņa (Member of the Working Group)
, Gunta Ķizāne (Member of the Working Group)
, Andris Leščinskis (Member of the Working Group)
, Elīna Pajuste (Member of the Working Group)
, Anete Stīne Teimane (Member of the Working Group)
, Aigars Vītiņš (Member of the Working Group)
, Rūdolfs Jānis Zabolockis (Member of the Working Group)
, Artūrs Zariņš (Member of the Working Group)
, JET Contributors

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

Spectroscopic measurements of the hydrogenic Balmer-α and Balmer-γ 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-γ to Balmer-α 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.

Original language	English
Article number	101893
Journal	Nuclear Materials and Energy
Volume	42
DOIs	https://doi.org/10.1016/j.nme.2025.101893
Publication status	Published - Mar 2025

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

OECD Field of Science

1.3 Physical Sciences

Keywords

Divertor visible spectroscopy
EDGE2D
EIRENE
Fusion
Scrape-off layer

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10.1016/j.nme.2025.101893

Cite this

V.-P., R., Avotiņa, L., Baumane, L., Haļitovs, M., Kalniņa, P., Ķizāne, G., Leščinskis, A., Pajuste, E., Teimane, A. S., Vītiņš, A., Zabolockis, R. J., Zariņš, A., & Contributors, JET. (2025). Characterization of detachment inferred from the Balmer line ratios in JET-ILW low-confinement mode plasmas. Nuclear Materials and Energy, 42, Article 101893. https://doi.org/10.1016/j.nme.2025.101893

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

abstract = "Spectroscopic measurements of the hydrogenic Balmer-α and Balmer-γ 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-γ to Balmer-α 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.",

keywords = "Divertor visible spectroscopy, EDGE2D, EIRENE, Fusion, Scrape-off layer",

author = "Rikala V.-P. and Līga Avotiņa and Larisa Baumane and Mihails Haļitovs and Patrīcija Kalniņa and Gunta Ķizāne and Andris Le{\v s}{\v c}inskis and Elīna Pajuste and Teimane, \{Anete Stīne\} and Aigars Vītiņ{\v s} and Zabolockis, \{Rūdolfs Jānis\} and Artūrs Zariņ{\v s} and JET Contributors",

note = "Publisher Copyright: {\textcopyright} 2025",

year = "2025",

month = mar,

doi = "10.1016/j.nme.2025.101893",

language = "English",

volume = "42",

journal = "Nuclear Materials and Energy",

issn = "2352-1791",

publisher = "Elsevier Ltd",

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V.-P., R, Avotiņa, L, Baumane, L, Haļitovs, M , Kalniņa, P, Ķizāne, G, Leščinskis, A , Pajuste, E , Teimane, AS , Vītiņš, A , Zabolockis, RJ , Zariņš, A & Contributors, JET 2025, 'Characterization of detachment inferred from the Balmer line ratios in JET-ILW low-confinement mode plasmas', Nuclear Materials and Energy, vol. 42, 101893. https://doi.org/10.1016/j.nme.2025.101893

TY - JOUR

T1 - Characterization of detachment inferred from the Balmer line ratios in JET-ILW low-confinement mode plasmas

AU - V.-P., Rikala

AU - Contributors, JET

A2 - Avotiņa, Līga

A2 - Baumane, Larisa

A2 - Haļitovs, Mihails

A2 - Kalniņa, Patrīcija

A2 - Ķizāne, Gunta

A2 - Leščinskis, Andris

A2 - Pajuste, Elīna

A2 - Teimane, Anete Stīne

A2 - Vītiņš, Aigars

A2 - Zabolockis, Rūdolfs Jānis

A2 - Zariņš, Artūrs

PY - 2025/3

Y1 - 2025/3

N2 - Spectroscopic measurements of the hydrogenic Balmer-α and Balmer-γ 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-γ to Balmer-α 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.

AB - Spectroscopic measurements of the hydrogenic Balmer-α and Balmer-γ 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-γ to Balmer-α 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.

KW - Divertor visible spectroscopy

KW - EDGE2D

KW - EIRENE

KW - Fusion

KW - Scrape-off layer

UR - https://www.scopus.com/pages/publications/85217394541

U2 - 10.1016/j.nme.2025.101893

DO - 10.1016/j.nme.2025.101893

M3 - Article

SN - 2352-1791

VL - 42

JO - Nuclear Materials and Energy

JF - Nuclear Materials and Energy

M1 - 101893

ER -

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

Abstract

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OECD Field of Science

Keywords

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