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Atoms 2018, 6(3), 37; https://doi.org/10.3390/atoms6030037

Collision Strengths and Effective Collision Strengths for Allowed Transitions among the n ≤ 5 Degenerate Levels of Atomic Hydrogen

1
Astrophysics Research Centre, School of Mathematics and Physics, Queen’s University Belfast, Belfast BT7 1NN, Northern Ireland, UK
2
Department of Applied Physics, Faculty of Engineering, University of Miyazaki, Miyazaki 889-2192, Japan
*
Author to whom correspondence should be addressed.
Received: 4 June 2018 / Revised: 28 June 2018 / Accepted: 3 July 2018 / Published: 10 July 2018
(This article belongs to the Section Atomic, Molecular and Nuclear Spectroscopy and Collisions)
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Abstract

We report calculations of collision strengths and effective collision strengths for 26 allowed transitions among the n 5 degenerate levels of atomic hydrogen for which the close-coupling (CC) and Born approximations have been used. Results are listed over a wide range of energies (up to 100 Ryd) and temperatures (up to 107 K), sufficient for applications over a variety of plasmas, including fusion. Similar results have also been calculated for deuterium, but they negligibly differ with those of hydrogen. View Full-Text
Keywords: atomic hydrogen and deuterium; degenerate levels; Born approximation; collision strengths; effective collision strengths atomic hydrogen and deuterium; degenerate levels; Born approximation; collision strengths; effective collision strengths
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Aggarwal, K.M.; Owada, R.; Igarashi, A. Collision Strengths and Effective Collision Strengths for Allowed Transitions among the n ≤ 5 Degenerate Levels of Atomic Hydrogen. Atoms 2018, 6, 37.

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