Idioma:

Modification of impurity transport in the presence of saturated (m,n) = (1,1) MHD activity at ASDEX Upgrade

Sertoli, M ; Dux, R ; Pütterich, T

Plasma physics and controlled fusion, 2015-07, Vol.57 (7), p.75004-14 [Periódico revisado por pares]

Texto completo disponível

Citações Citado por

Título:
Modification of impurity transport in the presence of saturated (m,n) = (1,1) MHD activity at ASDEX Upgrade
Autor: Sertoli, M ; Dux, R ; Pütterich, T
Assuntos: Controlled fusion ; Density ; Impurities ; Magnetohydrodynamics ; MHD ; MHD instabilities ; Plasma (physics) ; sawteeth ; Soft x-rays ; tokamaks ; Transport
É parte de: Plasma physics and controlled fusion, 2015-07, Vol.57 (7), p.75004-14
Notas: PPCF-100592.R1
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descrição: Impurity transport in sawtoothing plasmas in the presence of long lived inter-crash MHD activity is analysed in an ASDEX Upgrade discharge. In order to describe the time-evolution of the soft x-ray (SXR) time-traces after argon trace impurity injection, two sets of transport coefficients, switching at the onset of the mode, are necessary. The non-linear time evolution of the background SXR emissivity leads on the other hand to systematic errors that cannot be eliminated from the transport analysis. Typical experimental methods for the determination of the transport coefficients are demonstrated to be inapplicable and a way to determine the intrinsic density form a combination of SXR and vaccum-ultraviolet measurements is explained. Ideas for new ways to probe impurity transport in two dimensions in the presence of long-lived MHD activity are given.
Editor: IOP Publishing
Idioma: Inglês

Voltar para lista de resultados

Anterior Resultado 10 Avançar Ir para próxima página