Parameterization of Balmer-alpha asymmetric line shape in tokamak SOL plasmas

22nd International Conference on Spectral Line Shapes

Kukushkin, A.B.^1,2 ; Neverov, V.S.^1 ; Kadomtsev, M.B.^1 ; Kotov, V.^3 ; Kukushkin, A.S.^4 ; Levashova, M.G.^1 ; Lisgo, S.W.^4 ; Lisitsa, V.S.^1 ; Shurygin, V.A.^1 ; Alekseev, A.G.^1

NRC Kurchatov Institute, Moscow

123182, Russia^1

National Research Nuclear University MEPhI, Moscow

115409, Russia^2

Forschungszentrum Jülich, Euratom Association, Julich

52425, Germany^3

ITER Organization, Route de Vinon sur Verdon, St Paul Lez Durance

13115, France^4

关键词: High-resolution spectroscopy;    International thermonuclear experimental reactor;    Neutral atoms;    Predictive modeling;    Scrape-off layer plasmas;    Spectral data;    Spectral line shape;    Tokamak operation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/548/1/012012/pdf
DOI  :  10.1088/1742-6596/548/1/012012

来源: IOP

【 摘 要 】

A parameterization of the Balmer-alpha spectral line shape asymmetry in the tokamak scrape-off layer (SOL) plasmas is suggested, which describes the contribution of nonMaxwellian components of the neutral atom velocity distribution function. Parameterization is needed for a fast-routine interpretation of high-resolution spectroscopy data and should be incorporated into the algorithms for the recovery of hydrogen neutral atom parameters in the SOL. We illustrate the efficiency of the parameterization on the example of spectral data calculated using the predictive modeling of the International Thermonuclear Experimental Reactor (ITER) tokamak operation.