Table of Contents
Atoms, Volume 8, Issue 1 (March 2020) – 9 articles
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Cover Story (view full-size image) Among numerous diagnostic tools for multimillion-degree fusion plasmas, neutral beam spectroscopy [...] Read more. Among numerous diagnostic tools for multimillion-degree fusion plasmas, neutral beam spectroscopy is one of the most advanced and popular techniques. Although the basic features of the produced spectra due to the interaction between the very fast beam atoms and the highly-charged ions in tokamaks or stellarators have been known for a long time, a more refined analysis was not available until very recently. In 2013, Marchuk et al. showed that a correct calculation of the interaction parameters (collisional cross sections) should be based on a new approach implementing the parabolic description of atomic states in neutral hydrogen. The present work expands this effort by extending the coverage of the atomic states to the principal quantum number n = 3 and providing complete sets of fitting coefficients for easy implementations in modeling.View this paper.