000835981 001__ 835981
000835981 005__ 20240711113518.0
000835981 0247_ $$2doi$$a10.1088/1741-4326/aa69c4
000835981 0247_ $$2ISSN$$a0029-5515
000835981 0247_ $$2ISSN$$a1741-4326
000835981 0247_ $$2WOS$$aWOS:000399878400002
000835981 0247_ $$2altmetric$$aaltmetric:19194889
000835981 037__ $$aFZJ-2017-05106
000835981 041__ $$aEnglish
000835981 082__ $$a530
000835981 1001_ $$0P:(DE-HGF)0$$aHakola, A.$$b0$$eCorresponding author
000835981 245__ $$aPlasma-wall interaction studies in the full-W ASDEX upgrade during helium plasma discharges
000835981 260__ $$aVienna$$bIAEA$$c2017
000835981 3367_ $$2DRIVER$$aarticle
000835981 3367_ $$2DataCite$$aOutput Types/Journal article
000835981 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1500988131_25564
000835981 3367_ $$2BibTeX$$aARTICLE
000835981 3367_ $$2ORCID$$aJOURNAL_ARTICLE
000835981 3367_ $$00$$2EndNote$$aJournal Article
000835981 520__ $$aPlasma-wall interactions have been studied in the full-W ASDEX Upgrade during its dedicated helium campaign. Relatively clean plasmas with a He content of  >80% could be obtained by applying ion cyclotron wall conditioning (ICWC) discharges upon changeover from D to He. However, co-deposited layers with significant amounts of He and D were measured on W samples exposed to ICWC plasmas at the low-field side (outer) midplane. This is a sign of local migration and accumulation of materials and residual fuel in regions shadowed from direct plasma exposure albeit globally D was removed from the vessel. When exposing W samples to ELMy H-mode helium plasmas in the outer strike-point region, no net erosion was observed but the surfaces had been covered with co-deposited layers mainly consisting of W, B, C, and D and being the thickest on rough and modified surfaces. This is different from the typical erosion-deposition patterns in D plasmas, where usually sharp net-erosion peaks surrounded by prominent net-deposition maxima for W are observed close to the strike point. Moreover, no clear signs of W nanostructure growth or destruction could be seen. The growth of deposited layers may impact the operation of future fusion reactors and is attributed to strong sources in the main chamber that under suitable conditions may switch the balance from net erosion into net deposition, even close to the strike points. In addition, the absence of noticeable chemical erosion in helium plasmas may have affected the thickness of the deposited layers. Retention of He, for its part, remained small and uniform throughout the strike-point region although our results indicate that samples with smooth surfaces can contain an order of magnitude less He than their rough counterparts.
000835981 536__ $$0G:(DE-HGF)POF3-174$$a174 - Plasma-Wall-Interaction (POF3-174)$$cPOF3-174$$fPOF III$$x0
000835981 588__ $$aDataset connected to CrossRef
000835981 7001_ $$0P:(DE-Juel1)129976$$aBrezinsek, S.$$b1
000835981 7001_ $$0P:(DE-HGF)0$$aDouai, D.$$b2
000835981 7001_ $$0P:(DE-HGF)0$$aBalden, M.$$b3
000835981 7001_ $$0P:(DE-HGF)0$$aBobkov, V.$$b4
000835981 7001_ $$0P:(DE-HGF)0$$aCarralero, D.$$b5
000835981 7001_ $$0P:(DE-HGF)0$$aGreuner, H.$$b6
000835981 7001_ $$0P:(DE-HGF)0$$aElgeti, S.$$b7
000835981 7001_ $$0P:(DE-HGF)0$$aKallenbach, A.$$b8
000835981 7001_ $$0P:(DE-HGF)0$$aKrieger, K.$$b9
000835981 7001_ $$0P:(DE-HGF)0$$aMeisl, G.$$b10
000835981 7001_ $$0P:(DE-HGF)0$$aOberkofler, M.$$b11
000835981 7001_ $$0P:(DE-HGF)0$$aRohde, V.$$b12
000835981 7001_ $$0P:(DE-HGF)0$$aSchneider, P.$$b13
000835981 7001_ $$0P:(DE-HGF)0$$aSchwarz-Selinger, T.$$b14
000835981 7001_ $$0P:(DE-HGF)0$$aLahtinen, A.$$b15
000835981 7001_ $$0P:(DE-HGF)0$$aDe Temmerman, G.$$b16
000835981 7001_ $$0P:(DE-HGF)0$$aCaniello, R.$$b17
000835981 7001_ $$0P:(DE-HGF)0$$aGhezzi, F.$$b18
000835981 7001_ $$0P:(DE-HGF)0$$aGarcia-Carrasco, A.$$b19
000835981 7001_ $$0P:(DE-HGF)0$$aPetersson, P.$$b20
000835981 7001_ $$0P:(DE-HGF)0$$aBogdanovic Radovic, I.$$b21
000835981 7001_ $$0P:(DE-HGF)0$$aSiketic, Z.$$b22
000835981 7001_ $$0P:(DE-HGF)0$$aWauters, T.$$b23
000835981 773__ $$0PERI:(DE-600)2037980-8$$a10.1088/1741-4326/aa69c4$$gVol. 57, no. 6, p. 066015 -$$n6$$p066015$$tNuclear fusion$$v57$$x1741-4326$$y2017
000835981 8564_ $$uhttps://juser.fz-juelich.de/record/835981/files/Hakola_2017_Nucl._Fusion_57_066015.pdf$$yRestricted
000835981 909CO $$ooai:juser.fz-juelich.de:835981$$pVDB
000835981 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)129976$$aForschungszentrum Jülich$$b1$$kFZJ
000835981 9131_ $$0G:(DE-HGF)POF3-174$$1G:(DE-HGF)POF3-170$$2G:(DE-HGF)POF3-100$$3G:(DE-HGF)POF3$$4G:(DE-HGF)POF$$aDE-HGF$$bEnergie$$lKernfusion$$vPlasma-Wall-Interaction$$x0
000835981 9141_ $$y2017
000835981 915__ $$0StatID:(DE-HGF)0420$$2StatID$$aNationallizenz
000835981 915__ $$0StatID:(DE-HGF)0430$$2StatID$$aNational-Konsortium
000835981 915__ $$0StatID:(DE-HGF)0100$$2StatID$$aJCR$$bNUCL FUSION : 2015
000835981 915__ $$0StatID:(DE-HGF)0200$$2StatID$$aDBCoverage$$bSCOPUS
000835981 915__ $$0StatID:(DE-HGF)0600$$2StatID$$aDBCoverage$$bEbsco Academic Search
000835981 915__ $$0StatID:(DE-HGF)0030$$2StatID$$aPeer Review$$bASC
000835981 915__ $$0StatID:(DE-HGF)0199$$2StatID$$aDBCoverage$$bThomson Reuters Master Journal List
000835981 915__ $$0StatID:(DE-HGF)0110$$2StatID$$aWoS$$bScience Citation Index
000835981 915__ $$0StatID:(DE-HGF)0150$$2StatID$$aDBCoverage$$bWeb of Science Core Collection
000835981 915__ $$0StatID:(DE-HGF)0111$$2StatID$$aWoS$$bScience Citation Index Expanded
000835981 915__ $$0StatID:(DE-HGF)1150$$2StatID$$aDBCoverage$$bCurrent Contents - Physical, Chemical and Earth Sciences
000835981 915__ $$0StatID:(DE-HGF)9900$$2StatID$$aIF < 5
000835981 9201_ $$0I:(DE-Juel1)IEK-4-20101013$$kIEK-4$$lPlasmaphysik$$x0
000835981 980__ $$ajournal
000835981 980__ $$aVDB
000835981 980__ $$aI:(DE-Juel1)IEK-4-20101013
000835981 980__ $$aUNRESTRICTED
000835981 981__ $$aI:(DE-Juel1)IFN-1-20101013