Atomic data for beam-stimulated plasma spectroscopy in fusion plasmas

Published

July 11, 2013

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

Pub Type

Conferences

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DOI Link

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 May 3, 2024)