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Atomic data for beam-stimulated plasma spectroscopy in fusion plasmas

Published

Author(s)

O. Marchuk, Yuri Ralchenko, David R. Schultz, W. Biel, T. Schlummer, TEXTOR Team

Abstract

Injection of high energy atoms into a confined plasma volume is an established diagnostic technique in fusion research. This method strongly depends on the quality of atomic data for charge exchange spectroscopy (CXRS), motional Stark effect (MSE) and beam-emission spectroscopy (BES). We present some examples of atomic data for CXRS and review the current status of collisional data for parabolic states of hydrogen atoms that are used for accurate MSE modeling. It is shown that the collisional data require knowledge of the excitation density matrix including the off-diagonal matrix elements. The new datasets for transitions between parabolic states are used in an extended collisional-radiative model. The ratios between thes - and p-components and the beam emission rate coefficients are calculated in a quasi-steady state approximation. Good agreement with the experimental data from JET is found which points out to strong deviations from the statistical distribution for magnetic sublevels.
Proceedings Title
Proceedings of the 12th ICAMDATA Conference
Volume
1545
Issue
1
Conference Dates
September 30-October 4, 2012
Conference Location
Gaithersburg, MD, US

Keywords

atomic data, charge exchange, atom-ion collisions, Stark effect, density matrix

Citation

Marchuk, O. , Ralchenko, Y. , Schultz, D. , Biel, W. , Schlummer, T. and Team, T. (2013), Atomic data for beam-stimulated plasma spectroscopy in fusion plasmas, Proceedings of the 12th ICAMDATA Conference , Gaithersburg, MD, US, [online], https://doi.org/10.1063/1.4815849 (Accessed June 15, 2024)

Issues

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Created July 11, 2013, Updated July 7, 2023