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

Groth, M.; Hollmann, E. M.; Jaervinen, A. E.; Leonard, A. W.; McLean, A. G.; Samuell, C. M.; Reiter, D.; Allen, S. L.; Boerner, P.; Brezinsek, S.; Bykov, I.; Corrigan, G.; Fenstermacher, M. E.; Harting, D.; Lasnier, C. J.; Lomanowski, B.; Makowski, M. A.; Shafer, Morgan W.; Wang, H. Q.; Watkins, J. G.; Wiesen, S.; Wilcox, Robert S.

doi:10.1016/j.nme.2019.02.035

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

Journal Article · Tue Mar 05 00:00:00 EST 2019 · Nuclear Materials and Energy

DOI:https://doi.org/10.1016/j.nme.2019.02.035· OSTI ID:1502527

Groth, M. ^[1]; Hollmann, E. M. ^[2]; ^[3]; ^[4]; McLean, A. G. ^[3]; Samuell, C. M. ^[3]; Reiter, D. ^[5]; Allen, S. L. ^[3]; Boerner, P. ^[5]; ^[5]; Bykov, I. ^[4]; Corrigan, G. ^[6]; Fenstermacher, M. E. ^[3]; Harting, D. ^[6]; Lasnier, C. J. ^[3]; Lomanowski, B. ^[1]; Makowski, M. A. ^[3]; ^[7]; Wang, H. Q. ^[8]; Watkins, J. G. ^[9] more »

Aalto Univ., Espoo (Finland)
Univ. of California, San Diego, CA (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
General Atomics, San Diego, CA (United States)
Forschungszentrum Jülich GmbH, Institute for Energy and Climate Research Plasma Physics, Jülich (Germany)
Culham Centre for Fusion Energy, Culham Science Centre, Abingdon (United Kingdom)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Oak Ridge Associated Univ., Oak Ridge, TN (United States)
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

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.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC)

Grant/Contract Number:: AC05-00OR22725; AC52-07NA27344; FC02-04ER54698

OSTI ID:: 1502527

Alternate ID(s):: OSTI ID: 1605060

Report Number(s):: LLNL-JRNL--806826

Journal Information:: Nuclear Materials and Energy, Journal Name: Nuclear Materials and Energy Journal Issue: C Vol. 19; ISSN 2352-1791

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited By (2)

Novel inferences of ionisation and recombination for particle/power balance during detached discharges using deuterium Balmer line spectroscopy Verhaegh, K.; Lipschultz, B.; Duval, B. P. Plasma Physics and Controlled Fusion, Vol. 61, Issue 12 https://doi.org/10.1088/1361-6587/ab4f1e	journal	November 2019
Novel inferences of ionisation & recombination for particle/power balance during detached discharges using deuterium Balmer line spectroscopy Verhaegh, K.; Lipschultz, B.; Duval, B. P. arXiv https://doi.org/10.48550/arxiv.1903.08157	text	January 2019

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