Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
TUNGSTEN AS TARGET MATERIAL IN FUSION DEVICES
Autore:
NAUJOKS D; ASMUSSEN K; BESSENRODTWEBERPALS M; DESCHKA S; DUX R; ENGELHARDT W; FIELD AR; FUSSMANN G; FUCHS JC; GARCIAROSALES C; HIRSCH S; IGNACZ P; LIEDER G; MAST KF; NEU R; RADTKE R; ROTH J; WENZEL U;
Indirizzi:
MAX PLANCK INST PLASMA PHYS,EURATOM ASSOC,BOLTZMANNSTR 2 D-8046 GARCHING GERMANY
Titolo Testata:
Nuclear fusion
fascicolo: 6, volume: 36, anno: 1996,
pagine: 671 - 687
SICI:
0029-5515(1996)36:6<671:TATMIF>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
DIVERTOR PLATE; ASDEX-UPGRADE; PLASMA; REACTORS; EROSION; WALL; REDEPOSITION; TRANSPORT; IONS; JET;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
52
Recensione:
Indirizzi per estratti:
Citazione:
D. Naujoks et al., "TUNGSTEN AS TARGET MATERIAL IN FUSION DEVICES", Nuclear fusion, 36(6), 1996, pp. 671-687

Abstract

Several experiments were conducted in ASDEX Upgrade to prove the suitability of tungsten as a divertor target material under the conditionsof a high density and low temperature divertor. The observed fluxes from a tungsten tile into the plasma are low, in keeping with the extremely low sputtering yields. In addition, the very favourable effect of'prompt redeposition' (redeposition during the first gyration) could be confirmed by the experiments. Cooling of the edge region by neon injection seems permissible, i.e. neon impurity sputtering did not increase the eroded fluxes of tungsten. The transport and accumulation behaviour were investigated by means of the laser blow-off technique. No accumulation effects could be observed in ohmic discharges. In discharges with NBI heating but without ICRH, strong accumulation can occur. High heat flux tests were performed on graphite tiles coated with plasma sprayed tungsten, which withstood a thermal load of 15 MW/m(2) lasting 2 s as well as 1000 cycles of 10 MW/m(2) for 2 s without disabling damage. Owing to the encouraging results, an experiment using a tungsten divertor is planned in ASDEX Upgrade.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/03/20 alle ore 10:31:16