EDGE2D-EIRENE predictions of molecular emission in DIII-D high-recycling divertor plasmas
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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7
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Nuclear Materials and Energy, Volume 19, pp. 211-217
Abstract
The contributions of deuterium molecular emission to the total deuterium radiation was assessed in DIII-D ohmically-confined plasmas in high-recycling divertor conditions. Radial profiles of the deuterium Ly-α line intensity across the low-field side divertor leg were obtained with the recently installed divertor Survey Poor Resolution, Extended Spectrometer [1]. A high-resolution spectrometer was used to measure the poloidal profiles of the deuterium Balmer-α and the deuterium Fulcher-α band intensity in the visible wavelength range. The scrape-off layer plasma and neutral distributions were simulated using the edge fluid EDGE2D-EIRENE [2], and the numerical solutions constrained utilizing Thomson scattering and Langmuir probe measurements at the low-field side midplane and the divertor target plate. The studies show that for these conditions molecular emission plays a negligible role in the total radiative power balance of the low-field side divertor, but molecular processes are important when evaluating deuterium Balmer-α line intensity for code-experiment validation.Description
| openaire: EC/H2020/633053/EU//EUROfusion
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Groth, M, Lomanowski, B & the DIII-D team 2019, 'EDGE2D-EIRENE predictions of molecular emission in DIII-D high-recycling divertor plasmas', Nuclear Materials and Energy, vol. 19, pp. 211-217. https://doi.org/10.1016/j.nme.2019.02.035