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ELM and inter-ELM tungsten erosion sources in high-power, JET ITER-like wall H-mode plasmas
Aalto Univ, Espoo, Finland.;Univ Strathclyde, Dept Phys, Glasgow, Scotland.;Aalto Univ, Otakaari, Espoo 02150, Finland..
Aalto Univ, Espoo, Finland..
Forschungszentrum Julich GmbH, Julich, Germany..
Vise andre og tillknytning
2022 (engelsk)Inngår i: Nuclear Materials and Energy, E-ISSN 2352-1791, Vol. 33, artikkel-id 101264Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Simulations of JET ITER-like wall high-confinement mode plasmas, including type-I edge-localised modes (ELMs), using JINTRAC for the background plasmas and ERO2.0 for tungsten erosion and transport, predict virtually perfect screening of the primary W erosion sources at the divertor targets during both the ELM and inter-ELM phases. The largest source of W influx to the main plasma is predicted to be the outer vertical divertor due to sputtering by energetic fuel (D, T) atoms from charge-exchange reactions. ERO2.0 predictions accurately reproduce the measured W I emission in the low-field side divertor, but underpredict the W II emission by a factor of 10. Potential reasons for the W II discrepancy include uncertainties in the atomic data, assumptions on the sheath properties and the sputtering angle distribution, and the impact of metastable states.

sted, utgiver, år, opplag, sider
Elsevier BV , 2022. Vol. 33, artikkel-id 101264
Emneord [en]
Tungsten, Erosion, Edge -localised mode, JET, JINTRAC, ERO2, 0, Spectroscopy
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Identifikatorer
URN: urn:nbn:se:kth:diva-321126DOI: 10.1016/j.nme.2022.101264ISI: 000868608400001Scopus ID: 2-s2.0-85139330531OAI: oai:DiVA.org:kth-321126DiVA, id: diva2:1709517
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QC 20221109

Tilgjengelig fra: 2022-11-09 Laget: 2022-11-09 Sist oppdatert: 2022-11-09bibliografisk kontrollert

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Frassinetti, Lorenzo

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