EDGE2D-EIRENE predictions of molecular emission in DIII-D high-recycling divertor plasmas

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EDGE2D-EIRENE predictions of molecular emission in DIII-D high-recycling divertor plasmas. / the DIII-D team ; Groth, M.; Lomanowski, B.

In: Nuclear Materials and Energy, Vol. 19, 01.05.2019, p. 211-217.

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@article{4e64f0e0e5b24583bf659e372556435b,
title = "EDGE2D-EIRENE predictions of molecular emission in DIII-D high-recycling divertor plasmas",
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.",
keywords = "Deuterium atomic and molecular emission, DIII-D, Divertor edge fluid simulations, EDGE2D-EIRENE, EIRENE, Lyman-Werner and Fulcher band",
author = "{the DIII-D team} and M. Groth and Hollmann, {E. M.} and Jaervinen, {A. E.} and Leonard, {A. W.} and McLean, {A. G.} and Samuell, {C. M.} and D. Reiter and Allen, {S. L.} and P. Boerner and S. Brezinsek and I. Bykov and G. Corrigan and Fenstermacher, {M. E.} and D. Harting and Lasnier, {C. J.} and B. Lomanowski and Makowski, {M. A.} and Shafer, {M. W.} and Wang, {H. Q.} and Watkins, {J. G.} and S. Wiesen and Wilcox, {R. S.}",
note = "| openaire: EC/H2020/633053/EU//EUROfusion",
year = "2019",
month = "5",
day = "1",
doi = "10.1016/j.nme.2019.02.035",
language = "English",
volume = "19",
pages = "211--217",
journal = "Nuclear Materials and Energy",
issn = "2352-1791",
publisher = "Elsevier Science Publishers BV",

}

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TY - JOUR

T1 - EDGE2D-EIRENE predictions of molecular emission in DIII-D high-recycling divertor plasmas

AU - the DIII-D team

AU - Groth, M.

AU - Hollmann, E. M.

AU - Jaervinen, A. E.

AU - Leonard, A. W.

AU - McLean, A. G.

AU - Samuell, C. M.

AU - Reiter, D.

AU - Allen, S. L.

AU - Boerner, P.

AU - Brezinsek, S.

AU - Bykov, I.

AU - Corrigan, G.

AU - Fenstermacher, M. E.

AU - Harting, D.

AU - Lasnier, C. J.

AU - Lomanowski, B.

AU - Makowski, M. A.

AU - Shafer, M. W.

AU - Wang, H. Q.

AU - Watkins, J. G.

AU - Wiesen, S.

AU - Wilcox, R. S.

N1 - | openaire: EC/H2020/633053/EU//EUROfusion

PY - 2019/5/1

Y1 - 2019/5/1

N2 - 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.

AB - 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.

KW - Deuterium atomic and molecular emission

KW - DIII-D

KW - Divertor edge fluid simulations

KW - EDGE2D-EIRENE

KW - EIRENE

KW - Lyman-Werner and Fulcher band

UR - http://www.scopus.com/inward/record.url?scp=85062352279&partnerID=8YFLogxK

U2 - 10.1016/j.nme.2019.02.035

DO - 10.1016/j.nme.2019.02.035

M3 - Article

VL - 19

SP - 211

EP - 217

JO - Nuclear Materials and Energy

JF - Nuclear Materials and Energy

SN - 2352-1791

ER -

ID: 35318788