UEDGE-CRUMPET predicted isotopologue effect on atomic and molecular emission in DIII-D high-recycling divertor plasmas

Andreas Holm; Mathias Groth; Adam McLean; Filippo Scotti; Thomas D. Rognlien; William H. Meyer; Morgan W. Shafer; Robert S. Wilcox; Eric M. Hollmann

doi:10.1016/j.nme.2022.101337

UEDGE-CRUMPET predicted isotopologue effect on atomic and molecular emission in DIII-D high-recycling divertor plasmas

Andreas Holm^*, Mathias Groth, Adam McLean, Filippo Scotti, Thomas D. Rognlien, William H. Meyer, Morgan W. Shafer, Robert S. Wilcox, Eric M. Hollmann

^*Tämän työn vastaava kirjoittaja

Tutkimustuotos: Lehtiartikkeli › Article › Scientific › vertaisarvioitu

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Abstrakti

UEDGE-CRUMPET simulations indicate the impact of the molecular hydrogenic isotopologue effect under high-recycling LFS divertor conditions in DIII-D to be negligible for electron density and temperature profiles at the LFS target plate. A 30% decrease in molecular content, accompanied by a 10% increase in atomic content, is predicted for deuterium compared to hydrogen. The predicted isotopologue effect on the radiative power balance, validated with calibrated spectroscopy, is found to be small despite a 20% increase in LFS divertor molecular band emission for deuterium compared to hydrogen. The predictions and measurements show a negligible contribution of molecularly-induced atomic and direct molecular emission to the total radiative power balance under high-recycling conditions, consistent with previous EDGE2D-EIRENE investigations. The UEDGE-CRUMPET simulations were performed using effective hydrogen and deuterium rates considering molecular breakup and excitation processes for H₂ and D₂, calculated by the CRUMPET collisional-radiative model.

Alkuperäiskieli	Englanti
Artikkeli	101337
Julkaisu	Nuclear Materials and Energy
Vuosikerta	34
DOI - pysyväislinkit	https://doi.org/10.1016/j.nme.2022.101337
Tila	Julkaistu - maalisk. 2023
OKM-julkaisutyyppi	A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Pääsy asiakirjaan

10.1016/j.nme.2022.101337Lisenssi: CC BY-NC-ND

SCI_Holm_etal_NME_2023Final published version, 1,63 MBLisenssi: CC BY-NC-ND

Muut tiedostot ja linkit

Linkki julkaisuun Scopuksessa

MoPEF: Molecules and Photons in the edge of fusion plasmas
Groth, M., Järvinen, A., Kiviniemi, T., Holm, A., Solokha, V., Mäenpää, R., Rees, D., Chandra, R., Virtanen, P., Reksoprodjo, H., Vesa, A. & Kuivasniemi, H.
01/09/2020 → 31/08/2024
Projekti: Academy of Finland: Other research funding

New Study Findings from Aalto University Illuminate Research in Nuclear Materials and Energy (UEDGE-CRUMPET predicted isotopologue effect on atomic and molecular emission in DIII-D high-recycling divertor plasmas)
Mathias Groth
02/03/2023
1 kohde/ Medianäkyvyys
Lehdistö/media: Esiintyminen mediassa

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@article{b9145e1dd1964017bad32647e2b13e5a,

title = "UEDGE-CRUMPET predicted isotopologue effect on atomic and molecular emission in DIII-D high-recycling divertor plasmas",

abstract = "UEDGE-CRUMPET simulations indicate the impact of the molecular hydrogenic isotopologue effect under high-recycling LFS divertor conditions in DIII-D to be negligible for electron density and temperature profiles at the LFS target plate. A 30% decrease in molecular content, accompanied by a 10% increase in atomic content, is predicted for deuterium compared to hydrogen. The predicted isotopologue effect on the radiative power balance, validated with calibrated spectroscopy, is found to be small despite a 20% increase in LFS divertor molecular band emission for deuterium compared to hydrogen. The predictions and measurements show a negligible contribution of molecularly-induced atomic and direct molecular emission to the total radiative power balance under high-recycling conditions, consistent with previous EDGE2D-EIRENE investigations. The UEDGE-CRUMPET simulations were performed using effective hydrogen and deuterium rates considering molecular breakup and excitation processes for H2 and D2, calculated by the CRUMPET collisional-radiative model.",

keywords = "Balmer-alpha, Collisional-radiative, CRUMPET, DIII-D, Edge-fluid simulations, Fulcher, Isotope effect, Lyman-alpha, Lyman–Werner, Molecules, UEDGE",

author = "Andreas Holm and Mathias Groth and Adam McLean and Filippo Scotti and Rognlien, {Thomas D.} and Meyer, {William H.} and Shafer, {Morgan W.} and Wilcox, {Robert S.} and Hollmann, {Eric M.}",

note = "Funding Information: This work was supported by US DOE under contract nos. DE-FC02-04ER54698, DE-AC52-07NA27344, and DE-AC05-00OR22725. This work was supported by the Academy of Finland under grant no. 13330050. This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. Funding Information: This work was supported by US DOE under contract nos. DE-FC02-04ER54698 , DE-AC52-07NA27344 , and DE-AC05-00OR22725 . This work was supported by the Academy of Finland under grant no. 13330050 . Publisher Copyright: {\textcopyright} 2023 The Authors",

year = "2023",

month = mar,

doi = "10.1016/j.nme.2022.101337",

language = "English",

volume = "34",

journal = "Nuclear Materials and Energy",

issn = "2352-1791",

publisher = "Elsevier Science",

}

TY - JOUR

T1 - UEDGE-CRUMPET predicted isotopologue effect on atomic and molecular emission in DIII-D high-recycling divertor plasmas

AU - Holm, Andreas

AU - Groth, Mathias

AU - McLean, Adam

AU - Scotti, Filippo

AU - Rognlien, Thomas D.

AU - Meyer, William H.

AU - Shafer, Morgan W.

AU - Wilcox, Robert S.

AU - Hollmann, Eric M.

N1 - Funding Information: This work was supported by US DOE under contract nos. DE-FC02-04ER54698, DE-AC52-07NA27344, and DE-AC05-00OR22725. This work was supported by the Academy of Finland under grant no. 13330050. This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. Funding Information: This work was supported by US DOE under contract nos. DE-FC02-04ER54698 , DE-AC52-07NA27344 , and DE-AC05-00OR22725 . This work was supported by the Academy of Finland under grant no. 13330050 . Publisher Copyright: © 2023 The Authors

PY - 2023/3

Y1 - 2023/3

N2 - UEDGE-CRUMPET simulations indicate the impact of the molecular hydrogenic isotopologue effect under high-recycling LFS divertor conditions in DIII-D to be negligible for electron density and temperature profiles at the LFS target plate. A 30% decrease in molecular content, accompanied by a 10% increase in atomic content, is predicted for deuterium compared to hydrogen. The predicted isotopologue effect on the radiative power balance, validated with calibrated spectroscopy, is found to be small despite a 20% increase in LFS divertor molecular band emission for deuterium compared to hydrogen. The predictions and measurements show a negligible contribution of molecularly-induced atomic and direct molecular emission to the total radiative power balance under high-recycling conditions, consistent with previous EDGE2D-EIRENE investigations. The UEDGE-CRUMPET simulations were performed using effective hydrogen and deuterium rates considering molecular breakup and excitation processes for H2 and D2, calculated by the CRUMPET collisional-radiative model.

AB - UEDGE-CRUMPET simulations indicate the impact of the molecular hydrogenic isotopologue effect under high-recycling LFS divertor conditions in DIII-D to be negligible for electron density and temperature profiles at the LFS target plate. A 30% decrease in molecular content, accompanied by a 10% increase in atomic content, is predicted for deuterium compared to hydrogen. The predicted isotopologue effect on the radiative power balance, validated with calibrated spectroscopy, is found to be small despite a 20% increase in LFS divertor molecular band emission for deuterium compared to hydrogen. The predictions and measurements show a negligible contribution of molecularly-induced atomic and direct molecular emission to the total radiative power balance under high-recycling conditions, consistent with previous EDGE2D-EIRENE investigations. The UEDGE-CRUMPET simulations were performed using effective hydrogen and deuterium rates considering molecular breakup and excitation processes for H2 and D2, calculated by the CRUMPET collisional-radiative model.

KW - Balmer-alpha

KW - Collisional-radiative

KW - CRUMPET

KW - DIII-D

KW - Edge-fluid simulations

KW - Fulcher

KW - Isotope effect

KW - Lyman-alpha

KW - Lyman–Werner

KW - Molecules

KW - UEDGE

UR - http://www.scopus.com/inward/record.url?scp=85147198923&partnerID=8YFLogxK

U2 - 10.1016/j.nme.2022.101337

DO - 10.1016/j.nme.2022.101337

M3 - Article

AN - SCOPUS:85147198923

SN - 2352-1791

VL - 34

JO - Nuclear Materials and Energy

JF - Nuclear Materials and Energy

M1 - 101337

ER -

UEDGE-CRUMPET predicted isotopologue effect on atomic and molecular emission in DIII-D high-recycling divertor plasmas

Abstrakti

Pääsy asiakirjaan

Muut tiedostot ja linkit

Sormenjälki

Projektit

MoPEF: Molecules and Photons in the edge of fusion plasmas

Lehtileikkeet

New Study Findings from Aalto University Illuminate Research in Nuclear Materials and Energy (UEDGE-CRUMPET predicted isotopologue effect on atomic and molecular emission in DIII-D high-recycling divertor plasmas)

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