Review of atomic data needs for active charge-exchange spectroscopy on ITER

Marchuk, O.; Delabie, E.; Reiter, D.; von Hellermann, M.G.; Biel, W.; Jaspers, R.; Bertschinger, G.

doi:10.1063/1.2965019

Journal Article

Review of atomic data needs for active charge-exchange spectroscopy on ITER

Marchuk, O.FZJ* ; Bertschinger, G.FZJ* ; Biel, W.FZJ* ; Delabie, E. ; von Hellermann, M. G. ; Jaspers, R. ; Reiter, D.FZJ*

2008
American Institute of Physics [S.l.]

Review of scientific instruments 79, 10F532 (2008) [10.1063/1.2965019]

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Please use a persistent id in citations: http://hdl.handle.net/2128/16742 doi:10.1063/1.2965019

Abstract: The quantitative exploitation of active beam spectra is largely based on an advanced atomic modeling. Under the ITER operating conditions the penetration depth of a diagnostic beam into the plasma core crucially affects the intensities of spectral lines and hence the uncertainties of derived plasma parameters. A critical review of atomic data and an assessment of its error margins are, therefore, urgently needed. The aim of the present work is to verify the existing beam-stopping and beam-emission data for hydrogen beam in fusion plasmas. The agreement between the ADAS database and the present calculations is found to be within 5% for the beam-stopping data in a H-plasma. The calculation of beam attenuation in the presence of He-ash (4%) and Be ions (2%) demonstrates the agreement between the present data and the ADAS database within 10%. Finally, the maximum deviation of 15% is found only for beam-emission data at the electron density of 1x10(12)-2x10(12) cm(-3), which is significantly below the ITER density of 10(14) cm(-3).

Keyword(s): J ; hydrogen (auto) ; plasma density (auto) ; plasma diagnostics (auto) ; plasma toroidal confinement (auto) ; plasma-beam interactions (auto) ; Tokamak devices (auto)