EDGE2D-EIRENE predictions of molecular emission in DIII-D high-recycling divertor plasmas
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 inst...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2019-05-01
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| Series: | Nuclear Materials and Energy |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352179118302187 |
| _version_ | 1818056155196293120 |
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| author | M. Groth E.M. Hollmann A.E. Jaervinen A.W. Leonard A.G. McLean C.M. Samuell D. Reiter S.L. Allen P. Boerner S. Brezinsek I. Bykov G. Corrigan M.E. Fenstermacher D. Harting C.J. Lasnier B. Lomanowski M.A. Makowski M.W. Shafer H.Q. Wang J.G. Watkins S. Wiesen R.S. Wilcox |
| author_facet | M. Groth E.M. Hollmann A.E. Jaervinen A.W. Leonard A.G. McLean C.M. Samuell D. Reiter S.L. Allen P. Boerner S. Brezinsek I. Bykov G. Corrigan M.E. Fenstermacher D. Harting C.J. Lasnier B. Lomanowski M.A. Makowski M.W. Shafer H.Q. Wang J.G. Watkins S. Wiesen R.S. Wilcox |
| author_sort | M. Groth |
| collection | DOAJ |
| description | 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, Lyman-Werner and Fulcher band, DIII-D, Divertor edge fluid simulations, EDGE2D-EIRENE, EIRENE |
| first_indexed | 2024-12-10T12:24:20Z |
| format | Article |
| id | doaj.art-958cc39e336e4eab94dab2b0b89e9522 |
| institution | Directory Open Access Journal |
| issn | 2352-1791 |
| language | English |
| last_indexed | 2024-12-10T12:24:20Z |
| publishDate | 2019-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Materials and Energy |
| spelling | doaj.art-958cc39e336e4eab94dab2b0b89e95222022-12-22T01:48:59ZengElsevierNuclear Materials and Energy2352-17912019-05-0119211217EDGE2D-EIRENE predictions of molecular emission in DIII-D high-recycling divertor plasmasM. Groth0E.M. Hollmann1A.E. Jaervinen2A.W. Leonard3A.G. McLean4C.M. Samuell5D. Reiter6S.L. Allen7P. Boerner8S. Brezinsek9I. Bykov10G. Corrigan11M.E. Fenstermacher12D. Harting13C.J. Lasnier14B. Lomanowski15M.A. Makowski16M.W. Shafer17H.Q. Wang18J.G. Watkins19S. Wiesen20R.S. Wilcox21Aalto University, Espoo, Finland; Corresponding author.University of California San Diego, San Diego, CA, USALawrence Livermore National Laboratory, Livermore, CA, USAGeneral Atomics, San Diego, CA, USALawrence Livermore National Laboratory, Livermore, CA, USALawrence Livermore National Laboratory, Livermore, CA, USAForschungszentrum Jülich GmbH, Institute for Energy and Climate Research Plasma Physics, Jülich, GermanyLawrence Livermore National Laboratory, Livermore, CA, USAForschungszentrum Jülich GmbH, Institute for Energy and Climate Research Plasma Physics, Jülich, GermanyForschungszentrum Jülich GmbH, Institute for Energy and Climate Research Plasma Physics, Jülich, GermanyUniversity of California San Diego, San Diego, CA, USACulham Centre for Fusion Energy, Culham Science Centre, Abingdon, UKLawrence Livermore National Laboratory, Livermore, CA, USACulham Centre for Fusion Energy, Culham Science Centre, Abingdon, UKLawrence Livermore National Laboratory, Livermore, CA, USAAalto University, Espoo, FinlandLawrence Livermore National Laboratory, Livermore, CA, USAOak Ridge National Laboratory, Oak Ridge, TN, USAOak Ridge Associated Universities, Oak Ridge, TN, USASandia National Laboratory, Albuquerque, NM, USAForschungszentrum Jülich GmbH, Institute for Energy and Climate Research Plasma Physics, Jülich, GermanyOak Ridge National Laboratory, Oak Ridge, TN, USAThe 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, Lyman-Werner and Fulcher band, DIII-D, Divertor edge fluid simulations, EDGE2D-EIRENE, EIRENEhttp://www.sciencedirect.com/science/article/pii/S2352179118302187 |
| spellingShingle | M. Groth E.M. Hollmann A.E. Jaervinen A.W. Leonard A.G. McLean C.M. Samuell D. Reiter S.L. Allen P. Boerner S. Brezinsek I. Bykov G. Corrigan M.E. Fenstermacher D. Harting C.J. Lasnier B. Lomanowski M.A. Makowski M.W. Shafer H.Q. Wang J.G. Watkins S. Wiesen R.S. Wilcox EDGE2D-EIRENE predictions of molecular emission in DIII-D high-recycling divertor plasmas Nuclear Materials and Energy |
| title | EDGE2D-EIRENE predictions of molecular emission in DIII-D high-recycling divertor plasmas |
| title_full | EDGE2D-EIRENE predictions of molecular emission in DIII-D high-recycling divertor plasmas |
| title_fullStr | EDGE2D-EIRENE predictions of molecular emission in DIII-D high-recycling divertor plasmas |
| title_full_unstemmed | EDGE2D-EIRENE predictions of molecular emission in DIII-D high-recycling divertor plasmas |
| title_short | EDGE2D-EIRENE predictions of molecular emission in DIII-D high-recycling divertor plasmas |
| title_sort | edge2d eirene predictions of molecular emission in diii d high recycling divertor plasmas |
| url | http://www.sciencedirect.com/science/article/pii/S2352179118302187 |
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