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Titolo:
Spectroscopic study of the radiation in divertor I of ASDEX Upgrade at high density
Autore:
Wenzel, U; Carlson, A; Fuchs, C; Kastelewicz, H; Napiontek, B;
Indirizzi:
Euratom IPP Assoc, Max Planck Inst Plasmaphys, D-10117 Berlin, Germany Euratom IPP Assoc Berlin Germany D-10117 maphys, D-10117 Berlin, Germany Euratom IPP Assoc, Max Planck Inst Plasmaphys, D-85748 Garching, Germany Euratom IPP Assoc Garching Germany D-85748 ys, D-85748 Garching, Germany
Titolo Testata:
PLASMA PHYSICS AND CONTROLLED FUSION
fascicolo: 6, volume: 41, anno: 1999,
pagine: 801 - 818
SICI:
0741-3335(199906)41:6<801:SSOTRI>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
DIII-D; EROSION; PLASMAS; LOSSES; JT-60U;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Wenzel, U Euratom IPP Assoc, Max Planck Inst Plasmaphys, D-10117 Berlin, Germany Euratom IPP Assoc Berlin Germany D-10117 10117 Berlin, Germany
Citazione:
U. Wenzel et al., "Spectroscopic study of the radiation in divertor I of ASDEX Upgrade at high density", PLASMA PHYS, 41(6), 1999, pp. 801-818

Abstract

Radiation losses in divertor I of ASDEX Upgrade have been studied at high density when the divertor is detached. Spectroscopic measurements in the visible and VUV spectral range allow a characterization of both the impurity source and radiation. Despite very low target temperatures of 1 eV, carbon is released from the target with high rates by chemical sputtering. Power losses are estimated from the resonance lines of deuterium and the carbon ions. A comparison with bolometry shows that 80% of the emission can be ascribed to carbon and deuterium. The composition of the carbon emission is compared with results obtained on JT-60 and DIII-D. Using the Braams-Eirene model of the detached divertor the influence of transport on the power losses is investigated. By means of a realistic radiative loss function we find that the enhancement of maximum power input into the divertor by non-coronal effects is not more than a factor of two.

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Documento generato il 01/04/20 alle ore 23:57:11