- By:
- Pekka rikala, Vesa; Groth, M.; Shaw, A; Aleiferis, S; Jepu, Ionut; Meigs, Andrew; Reiter, D.; Lomanowski, Bartosz A; Corrigan, G.; Carvalho, I.; Harting, D.; Karhunen, Juuso; Lawson, K; Lowry, C; Menmuir, Sheena; Borodin, D.; Douai, D.; Huber, A.; Horsten, N.; Thomas, B
- Journal Name:
- Nuclear Materials and Energy
- Page Number:
- 101893
- Volume:
- 42
- Publication Date:
- August 27, 2025
- View DOI Listing:
- https://doi.org/10.1016/j.nme.2025.101893
Abstract
Spectroscopic measurements of the hydrogenic Balmer-a 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-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.
