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The role of plasma-molecule interactions on power and particle balance during detachment on the TCV tokamak

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dc.contributor.authorVerhaegh, K.
dc.contributor.authorLipschultz, B.
dc.contributor.authorHarrison, J. R.
dc.contributor.authorDuval, B. P.
dc.contributor.authorKukushkin, A.
dc.contributor.authorPshenov, A.
dc.date.accessioned2024-11-29T20:29:47Z
dc.date.available2024-11-29T20:29:47Z
dc.date.issued2021
dc.description.abstractThis paper shows experimental results from the TCV tokamak that indicate plasma-molecule interactions involving D2+ <i and possibly D- play an important role as sinks of energy (through hydrogenic radiation as well as dissociation) and particles (ions) during divertor detachment if low target temperatures (<3 eV) are achieved. Both molecular activated recombination (MAR) and ion source reduction due to a power limitation effect are shown to be important in reducing the ion target flux during a density ramp. In contrast, the electron-ion recombination (EIR) ion sink is too small to play an important role in reducing the ion target flux. MAR or EIR do not occur during N-2 seeding induced detachment as the target temperatures are not sufficiently low. The impact of D-2(+) <i is shown to be underestimated in present (vibrationally unresolved) SOLPS-ITER simulations, which could result from an underestimated D-2 + D+-> D-2(+) + D rate. The converged SOLPS-ITER simulations are post-processed with alternative reaction rates, resulting in considerable contributions of D-2(+) to particle and power losses as well as dissociation below the D-2 dissociation area. Those findings are in quantitative agreement with the experimental results.
dc.identifier.citationThe role of plasma-molecule interactions on power and particle balance during detachment on the TCV tokamak / Verhaegh, K [et al.] // Nuclear Fusion. - 2021. - 61. - № 10. - 10.1088/1741-4326/ac1dc5
dc.identifier.doi10.1088/1741-4326/ac1dc5
dc.identifier.urihttps://www.doi.org/10.1088/1741-4326/ac1dc5
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85115215234&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000694700700001
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/24699
dc.relation.ispartofNuclear Fusion
dc.titleThe role of plasma-molecule interactions on power and particle balance during detachment on the TCV tokamak
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue10
oaire.citation.volume61
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relation.isOrgUnitOfPublication.latestForDiscoverydcdb137c-0528-46a5-841b-780227a67cce
relation.isProjectOfPublication117c6561-b79e-45f2-a590-e65c3a8f2e84
relation.isProjectOfPublication.latestForDiscovery117c6561-b79e-45f2-a590-e65c3a8f2e84
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